90657684192 has 24 divisors (see below), whose sum is σ = 237976421256. Its totient is φ = 30219228032.

The previous prime is 90657684163. The next prime is 90657684223. The reversal of 90657684192 is 29148675609.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472175343 + ... + 472175534.

It is an arithmetic number, because the mean of its divisors is an integer number (9915684219).

Almost surely, 2^90657684192 is an apocalyptic number.

It is an amenable number.

90657684192 is an abundant number, since it is smaller than the sum of its proper divisors (147318737064).

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

90657684192 is a wasteful number, since it uses less digits than its factorization.

90657684192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944350890 (or 944350882 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 57.

The spelling of 90657684192 in words is "ninety billion, six hundred fifty-seven million, six hundred eighty-four thousand, one hundred ninety-two".