90814317565 has 16 divisors (see below), whose sum is σ = 112560376320. Its totient is φ = 70265482560.

The previous prime is 90814317563. The next prime is 90814317619. The reversal of 90814317565 is 56571341809.

It is not a de Polignac number, because 90814317565 - 2¹ = 90814317563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90814317563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82651 + ... + 434119.

It is an arithmetic number, because the mean of its divisors is an integer number (7035023520).

Almost surely, 2^90814317565 is an apocalyptic number.

It is an amenable number.

90814317565 is a deficient number, since it is larger than the sum of its proper divisors (21746058755).

90814317565 is a wasteful number, since it uses less digits than its factorization.

90814317565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353172.

The product of its (nonzero) digits is 907200, while the sum is 49.

The spelling of 90814317565 in words is "ninety billion, eight hundred fourteen million, three hundred seventeen thousand, five hundred sixty-five".