90847136920 has 16 divisors (see below), whose sum is σ = 204406058160. Its totient is φ = 36338854752.

The previous prime is 90847136899. The next prime is 90847136987. The reversal of 90847136920 is 2963174809.

It is a super-2 number, since 2×90847136920² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1135589172 + ... + 1135589251.

It is an arithmetic number, because the mean of its divisors is an integer number (12775378635).

Almost surely, 2^90847136920 is an apocalyptic number.

It is an amenable number.

90847136920 is an abundant number, since it is smaller than the sum of its proper divisors (113558921240).

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

90847136920 is a wasteful number, since it uses less digits than its factorization.

90847136920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271178434 (or 2271178430 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 90847136920 in words is "ninety billion, eight hundred forty-seven million, one hundred thirty-six thousand, nine hundred twenty".