90117819072 has 84 divisors (see below), whose sum is σ = 258349430976. Its totient is φ = 30034275840.

The previous prime is 90117819061. The next prime is 90117819083. The reversal of 90117819072 is 27091871109.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (90117819061) and next prime (90117819083).

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, 5418193 + ... + 5434799.

It is an arithmetic number, because the mean of its divisors is an integer number (3075588464).

Almost surely, 2^90117819072 is an apocalyptic number.

It is an amenable number.

90117819072 is an abundant number, since it is smaller than the sum of its proper divisors (168231611904).

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

90117819072 is a wasteful number, since it uses less digits than its factorization.

90117819072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26046 (or 26033 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 45.

The spelling of 90117819072 in words is "ninety billion, one hundred seventeen million, eight hundred nineteen thousand, seventy-two".