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80900870052 = 22315534341107
BaseRepresentation
bin100101101011000010…
…0010100111110100100
321201211010021000101110
41023112010110332210
52311141110320202
6101055414225020
75562541022622
oct1132604247644
9251733230343
1080900870052
1131345483092
1213819655170
137823974512
143cb6680512
15218761d26c
hex12d6114fa4

80900870052 has 24 divisors (see below), whose sum is σ = 188890291296. Its totient is φ = 26949586048.

The previous prime is 80900870047. The next prime is 80900870093. The reversal of 80900870052 is 25007800908.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2151918 + ... + 2189189.

It is an arithmetic number, because the mean of its divisors is an integer number (7870428804).

Almost surely, 280900870052 is an apocalyptic number.

It is an amenable number.

80900870052 is an abundant number, since it is smaller than the sum of its proper divisors (107989421244).

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

80900870052 is a wasteful number, since it uses less digits than its factorization.

80900870052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4342667 (or 4342665 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 80900870052 in words is "eighty billion, nine hundred million, eight hundred seventy thousand, fifty-two".

Divisors: 1 2 3 4 6 12 1553 3106 4659 6212 9318 18636 4341107 8682214 13023321 17364428 26046642 52093284 6741739171 13483478342 20225217513 26966956684 40450435026 80900870052