90764859784944 has 40 divisors (see below), whose sum is σ = 240813073938640. Its totient is φ = 29437251821568.

The previous prime is 90764859784933. The next prime is 90764859784987. The reversal of 90764859784944 is 44948795846709.

It is a congruent 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, 25553168209 + ... + 25553171760.

It is an arithmetic number, because the mean of its divisors is an integer number (6020326848466).

Almost surely, 2^{90764859784944} is an apocalyptic number.

It is an amenable number.

90764859784944 is an abundant number, since it is smaller than the sum of its proper divisors (150048214153696).

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

90764859784944 is a wasteful number, since it uses less digits than its factorization.

90764859784944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51106340017 (or 51106340011 counting only the distinct ones).

The product of its (nonzero) digits is 17557585920, while the sum is 84.

The spelling of 90764859784944 in words is "ninety trillion, seven hundred sixty-four billion, eight hundred fifty-nine million, seven hundred eighty-four thousand, nine hundred forty-four".