90724492295664 has 80 divisors (see below), whose sum is σ = 242935401139200. Its totient is φ = 29140637870848.

The previous prime is 90724492295641. The next prime is 90724492295711. The reversal of 90724492295664 is 46659229442709.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64086744 + ... + 65487095.

It is an arithmetic number, because the mean of its divisors is an integer number (3036692514240).

Almost surely, 2^{90724492295664} is an apocalyptic number.

It is an amenable number.

90724492295664 is an abundant number, since it is smaller than the sum of its proper divisors (152210908843536).

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

90724492295664 is a wasteful number, since it uses less digits than its factorization.

90724492295664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129574382 (or 129574376 counting only the distinct ones).

The product of its (nonzero) digits is 470292480, while the sum is 69.

The spelling of 90724492295664 in words is "ninety trillion, seven hundred twenty-four billion, four hundred ninety-two million, two hundred ninety-five thousand, six hundred sixty-four".