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20201200202020 = 22531132709245519
BaseRepresentation
bin1001001011111011101010…
…10111001011000100100100
32122112012211101010202210211
410211331311113023010210
510121434024222431040
6110544145300425204
74153326400355065
oct445756527130444
978465741122724
1020201200202020
11648930a962832
1223231650a8204
13b36c71168306
144dba598c256c
1525072d8858ea
hex125f755cb124

20201200202020 has 48 divisors (see below), whose sum is σ = 43791497164800. Its totient is φ = 7819728658560.

The previous prime is 20201200201991. The next prime is 20201200202023. The reversal of 20201200202020 is 2020200210202.

It is not an unprimeable number, because it can be changed into a prime (20201200202023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82156821 + ... + 82402339.

It is an arithmetic number, because the mean of its divisors is an integer number (912322857600).

Almost surely, 220201200202020 is an apocalyptic number.

20201200202020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201200202020 is an abundant number, since it is smaller than the sum of its proper divisors (23590296962780).

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

20201200202020 is a wasteful number, since it uses less digits than its factorization.

20201200202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378268 (or 378266 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20201200202020 its reverse (2020200210202), we get a palindrome (22221400412222).

The spelling of 20201200202020 in words is "twenty trillion, two hundred one billion, two hundred million, two hundred two thousand, twenty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 132709 245519 265418 491038 530836 663545 982076 1227595 1327090 2455190 2654180 4113979 4910380 7611089 8227958 15222178 16455916 20569895 30444356 38055445 41139790 76110890 82279580 152221780 32582580971 65165161942 130330323884 162912904855 325825809710 651651619420 1010060010101 2020120020202 4040240040404 5050300050505 10100600101010 20201200202020