85187902920 has 32 divisors (see below), whose sum is σ = 255563709120. Its totient is φ = 22716774080.

The previous prime is 85187902871. The next prime is 85187902927. The reversal of 85187902920 is 2920978158.

It is not an unprimeable number, because it can be changed into a prime (85187902927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354949476 + ... + 354949715.

It is an arithmetic number, because the mean of its divisors is an integer number (7986365910).

Almost surely, 2^85187902920 is an apocalyptic number.

It is an amenable number.

85187902920 is an abundant number, since it is smaller than the sum of its proper divisors (170375806200).

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

85187902920 is a wasteful number, since it uses less digits than its factorization.

85187902920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709899205 (or 709899201 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 51.

The spelling of 85187902920 in words is "eighty-five billion, one hundred eighty-seven million, nine hundred two thousand, nine hundred twenty".