90712815164 has 36 divisors (see below), whose sum is σ = 166209968064. Its totient is φ = 43274784000.

The previous prime is 90712815131. The next prime is 90712815173. The reversal of 90712815164 is 46151821709.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 552524 + ... + 697644.

Almost surely, 2^90712815164 is an apocalyptic number.

It is an amenable number.

90712815164 is a deficient number, since it is larger than the sum of its proper divisors (75497152900).

90712815164 is a wasteful number, since it uses less digits than its factorization.

90712815164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145298 (or 145225 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 90712815164 in words is "ninety billion, seven hundred twelve million, eight hundred fifteen thousand, one hundred sixty-four".