90996163731656 has 16 divisors (see below), whose sum is σ = 176121607223040. Its totient is φ = 44030401805520.

The previous prime is 90996163731617. The next prime is 90996163731661. The reversal of 90996163731656 is 65613736169909.

It is a self number, because there is not a number n which added to its sum of digits gives 90996163731656.

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, 183460007276 + ... + 183460007771.

It is an arithmetic number, because the mean of its divisors is an integer number (11007600451440).

Almost surely, 2^{90996163731656} is an apocalyptic number.

It is an amenable number.

90996163731656 is a deficient number, since it is larger than the sum of its proper divisors (85125443491384).

90996163731656 is a wasteful number, since it uses less digits than its factorization.

90996163731656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366920015084 (or 366920015080 counting only the distinct ones).

The product of its (nonzero) digits is 297606960, while the sum is 71.

The spelling of 90996163731656 in words is "ninety trillion, nine hundred ninety-six billion, one hundred sixty-three million, seven hundred thirty-one thousand, six hundred fifty-six".