90557677772 has 24 divisors (see below), whose sum is σ = 163624366080. Its totient is φ = 43808507280.

The previous prime is 90557677703. The next prime is 90557677781. The reversal of 90557677772 is 27777675509.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 496523 + ... + 653949.

It is an arithmetic number, because the mean of its divisors is an integer number (6817681920).

Almost surely, 2^90557677772 is an apocalyptic number.

It is an amenable number.

90557677772 is a deficient number, since it is larger than the sum of its proper divisors (73066688308).

90557677772 is a wasteful number, since it uses less digits than its factorization.

90557677772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162101 (or 162099 counting only the distinct ones).

The product of its (nonzero) digits is 45378900, while the sum is 62.

The spelling of 90557677772 in words is "ninety billion, five hundred fifty-seven million, six hundred seventy-seven thousand, seven hundred seventy-two".