90731884888 has 16 divisors (see below), whose sum is σ = 172275732000. Its totient is φ = 44791689696.

The previous prime is 90731884871. The next prime is 90731884931. The reversal of 90731884888 is 88848813709.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71780923 + ... + 71782186.

It is an arithmetic number, because the mean of its divisors is an integer number (10767233250).

Almost surely, 2^90731884888 is an apocalyptic number.

It is an amenable number.

90731884888 is a deficient number, since it is larger than the sum of its proper divisors (81543847112).

90731884888 is a wasteful number, since it uses less digits than its factorization.

90731884888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143563194 (or 143563190 counting only the distinct ones).

The product of its (nonzero) digits is 24772608, while the sum is 64.

The spelling of 90731884888 in words is "ninety billion, seven hundred thirty-one million, eight hundred eighty-four thousand, eight hundred eighty-eight".