90256160920 has 32 divisors (see below), whose sum is σ = 204421252320. Its totient is φ = 35863372800.

The previous prime is 90256160881. The next prime is 90256160923. The reversal of 90256160920 is 2906165209.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90256160923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7465497 + ... + 7477576.

It is an arithmetic number, because the mean of its divisors is an integer number (6388164135).

Almost surely, 2^90256160920 is an apocalyptic number.

It is an amenable number.

90256160920 is an abundant number, since it is smaller than the sum of its proper divisors (114165091400).

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

90256160920 is a wasteful number, since it uses less digits than its factorization.

90256160920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14943235 (or 14943231 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The spelling of 90256160920 in words is "ninety billion, two hundred fifty-six million, one hundred sixty thousand, nine hundred twenty".