90881966664 has 96 divisors (see below), whose sum is σ = 258872889600. Its totient is φ = 28763579520.

The previous prime is 90881966641. The next prime is 90881966671. The reversal of 90881966664 is 46666918809.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 265834 + ... + 502425.

It is an arithmetic number, because the mean of its divisors is an integer number (2696592600).

Almost surely, 2^90881966664 is an apocalyptic number.

It is an amenable number.

90881966664 is an abundant number, since it is smaller than the sum of its proper divisors (167990922936).

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

90881966664 is a wasteful number, since it uses less digits than its factorization.

90881966664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768355 (or 768348 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 63.

The spelling of 90881966664 in words is "ninety billion, eight hundred eighty-one million, nine hundred sixty-six thousand, six hundred sixty-four".