90537658656 has 24 divisors (see below), whose sum is σ = 237661354224. Its totient is φ = 30179219520.

The previous prime is 90537658621. The next prime is 90537658663. The reversal of 90537658656 is 65685673509.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 90537658656.

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, 471550210 + ... + 471550401.

It is an arithmetic number, because the mean of its divisors is an integer number (9902556426).

Almost surely, 2^90537658656 is an apocalyptic number.

90537658656 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

90537658656 is an abundant number, since it is smaller than the sum of its proper divisors (147123695568).

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

90537658656 is a wasteful number, since it uses less digits than its factorization.

90537658656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943100624 (or 943100616 counting only the distinct ones).

The product of its (nonzero) digits is 40824000, while the sum is 60.

The spelling of 90537658656 in words is "ninety billion, five hundred thirty-seven million, six hundred fifty-eight thousand, six hundred fifty-six".