90688973932 has 24 divisors (see below), whose sum is σ = 166132657152. Its totient is φ = 43263704400.

The previous prime is 90688973909. The next prime is 90688973983. The reversal of 90688973932 is 23937988609.

It is a happy number.

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, 5141638 + ... + 5159245.

It is an arithmetic number, because the mean of its divisors is an integer number (6922194048).

Almost surely, 2^90688973932 is an apocalyptic number.

It is an amenable number.

90688973932 is a deficient number, since it is larger than the sum of its proper divisors (75443683220).

90688973932 is a wasteful number, since it uses less digits than its factorization.

90688973932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10300989 (or 10300987 counting only the distinct ones).

The product of its (nonzero) digits is 35271936, while the sum is 64.

The spelling of 90688973932 in words is "ninety billion, six hundred eighty-eight million, nine hundred seventy-three thousand, nine hundred thirty-two".