90656518544 has 20 divisors (see below), whose sum is σ = 181313038080. Its totient is φ = 43866057120.

The previous prime is 90656518529. The next prime is 90656518571. The reversal of 90656518544 is 44581565609.

90656518544 is an admirable number.

It is a super-4 number, since 4×90656518544⁴ (a number of 45 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91387124 + ... + 91388115.

It is an arithmetic number, because the mean of its divisors is an integer number (9065651904).

Almost surely, 2^90656518544 is an apocalyptic number.

It is an amenable number.

90656518544 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

90656518544 is a wasteful number, since it uses less digits than its factorization.

90656518544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182775278 (or 182775272 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 53.

The spelling of 90656518544 in words is "ninety billion, six hundred fifty-six million, five hundred eighteen thousand, five hundred forty-four".