90688973984 has 48 divisors (see below), whose sum is σ = 206633145600. Its totient is φ = 38374712064.

The previous prime is 90688973983. The next prime is 90688974053. The reversal of 90688973984 is 48937988609.

It is not an unprimeable number, because it can be changed into a prime (90688973983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2544719 + ... + 2580110.

It is an arithmetic number, because the mean of its divisors is an integer number (4304857200).

Almost surely, 2^90688973984 is an apocalyptic number.

It is an amenable number.

90688973984 is an abundant number, since it is smaller than the sum of its proper divisors (115944171616).

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

90688973984 is a wasteful number, since it uses less digits than its factorization.

90688973984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5124925 (or 5124917 counting only the distinct ones).

The product of its (nonzero) digits is 188116992, while the sum is 71.

The spelling of 90688973984 in words is "ninety billion, six hundred eighty-eight million, nine hundred seventy-three thousand, nine hundred eighty-four".