90957369856 has 20 divisors (see below), whose sum is σ = 181737089622. Its totient is φ = 45478684672.

The previous prime is 90957369851. The next prime is 90957369863. The reversal of 90957369856 is 65896375909.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 55703552256 + 35253817600 = 236016^2 + 187760^2 .

It is a super-2 number, since 2×90957369856² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90957369791 and 90957369800.

It is not an unprimeable number, because it can be changed into a prime (90957369851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 88825045 + ... + 88826068.

Almost surely, 2^90957369856 is an apocalyptic number.

It is an amenable number.

90957369856 is a deficient number, since it is larger than the sum of its proper divisors (90779719766).

90957369856 is an equidigital number, since it uses as much as digits as its factorization.

90957369856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177651131 (or 177651115 counting only the distinct ones).

The product of its (nonzero) digits is 110224800, while the sum is 67.

The spelling of 90957369856 in words is "ninety billion, nine hundred fifty-seven million, three hundred sixty-nine thousand, eight hundred fifty-six".