90537798575 has 72 divisors (see below), whose sum is σ = 136669109760. Its totient is φ = 59211768000.

The previous prime is 90537798539. The next prime is 90537798677. The reversal of 90537798575 is 57589773509.

It is not a de Polignac number, because 90537798575 - 2⁶ = 90537798511 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10110350 + ... + 10119300.

It is an arithmetic number, because the mean of its divisors is an integer number (1898182080).

Almost surely, 2^90537798575 is an apocalyptic number.

90537798575 is a deficient number, since it is larger than the sum of its proper divisors (46131311185).

90537798575 is a wasteful number, since it uses less digits than its factorization.

90537798575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9357 (or 9345 counting only the distinct ones).

The product of its (nonzero) digits is 83349000, while the sum is 65.

The spelling of 90537798575 in words is "ninety billion, five hundred thirty-seven million, seven hundred ninety-eight thousand, five hundred seventy-five".