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2020001001020 = 2251051237140531
BaseRepresentation
bin11101011001010001011…
…100010010111000111100
321011002222100020222100122
4131121101130102320330
5231043430224013040
64143550423514112
7265640336131262
oct35312134227074
97132870228318
102020001001020
1170974a9a39a2
122875a62b8938
131186401cc812
146daa8d56432
1537828d951b5
hex1d651712e3c

2020001001020 has 48 divisors (see below), whose sum is σ = 4247933886336. Its totient is φ = 806871240000.

The previous prime is 2020001000993. The next prime is 2020001001037. The reversal of 2020001001020 is 201001000202.

It is a junction number, because it is equal to n+sod(n) for n = 2020001000989 and 2020001001007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49818155 + ... + 49858685.

It is an arithmetic number, because the mean of its divisors is an integer number (88498622632).

Almost surely, 22020001001020 is an apocalyptic number.

2020001001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020001001020 is an abundant number, since it is smaller than the sum of its proper divisors (2227932885316).

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

2020001001020 is a wasteful number, since it uses less digits than its factorization.

2020001001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43962 (or 43960 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 2020001001020 its reverse (201001000202), we get a palindrome (2221002001222).

The spelling of 2020001001020 in words is "two trillion, twenty billion, one million, one thousand, twenty".

Divisors: 1 2 4 5 10 20 1051 2102 2371 4204 4742 5255 9484 10510 11855 21020 23710 40531 47420 81062 162124 202655 405310 810620 2491921 4983842 9967684 12459605 24919210 42598081 49838420 85196162 96099001 170392324 192198002 212990405 384396004 425980810 480495005 851961620 960990010 1921980020 101000050051 202000100102 404000200204 505000250255 1010000500510 2020001001020