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20202020020020 = 223519149118933357
BaseRepresentation
bin1001001011111101001100…
…01110100001111100110100
32122112021221111202211200110
410211332212032201330310
510121442214111120040
6110544402504143020
74153355613612036
oct445764616417464
978467844684613
1020202020020020
1164896a06aa173
122323353767a70
13b37071c69817
144dbad6729c56
1525077a824980
hex125fa63a1f34

20202020020020 has 96 divisors (see below), whose sum is σ = 59942412432000. Its totient is φ = 5069415366144.

The previous prime is 20202020019953. The next prime is 20202020020031. The reversal of 20202020020020 is 2002002020202.

It is a super-2 number, since 2×202020200200202 (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20202020019978 and 20202020020005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59296819 + ... + 59636538.

It is an arithmetic number, because the mean of its divisors is an integer number (624400129500).

Almost surely, 220202020020020 is an apocalyptic number.

20202020020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202020020020 is an abundant number, since it is smaller than the sum of its proper divisors (39740392411980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20202020020020 is a wasteful number, since it uses less digits than its factorization.

20202020020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118933537 (or 118933535 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

Adding to 20202020020020 its reverse (2002002020202), we get a palindrome (22204022040222).

The spelling of 20202020020020 in words is "twenty trillion, two hundred two billion, twenty million, twenty thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 19 20 30 38 57 60 76 95 114 149 190 228 285 298 380 447 570 596 745 894 1140 1490 1788 2235 2831 2980 4470 5662 8493 8940 11324 14155 16986 28310 33972 42465 56620 84930 169860 118933357 237866714 356800071 475733428 594666785 713600142 1189333570 1427200284 1784000355 2259733783 2378667140 3568000710 4519467566 6779201349 7136001420 9038935132 11298668915 13558402698 17721070193 22597337830 27116805396 33896006745 35442140386 45194675660 53163210579 67792013490 70884280772 88605350965 106326421158 135584026980 177210701930 212652842316 265816052895 336700333667 354421403860 531632105790 673400667334 1010101001001 1063264211580 1346801334668 1683501668335 2020202002002 3367003336670 4040404004004 5050505005005 6734006673340 10101010010010 20202020020020