90975912772 has 6 divisors (see below), whose sum is σ = 159207847358. Its totient is φ = 45487956384.

The previous prime is 90975912751. The next prime is 90975912773. The reversal of 90975912772 is 27721957909.

It can be written as a sum of positive squares in only one way, i.e., 80256623616 + 10719289156 = 283296^2 + 103534^2 .

It is not an unprimeable number, because it can be changed into a prime (90975912773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11371989093 + ... + 11371989100.

Almost surely, 2^90975912772 is an apocalyptic number.

It is an amenable number.

90975912772 is a deficient number, since it is larger than the sum of its proper divisors (68231934586).

90975912772 is a wasteful number, since it uses less digits than its factorization.

90975912772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22743978197 (or 22743978195 counting only the distinct ones).

The product of its (nonzero) digits is 5000940, while the sum is 58.

The spelling of 90975912772 in words is "ninety billion, nine hundred seventy-five million, nine hundred twelve thousand, seven hundred seventy-two".