90881595524 has 12 divisors (see below), whose sum is σ = 159125083404. Its totient is φ = 45417285984.

The previous prime is 90881595523. The next prime is 90881595527. The reversal of 90881595524 is 42559518809.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 67227155524 + 23654440000 = 259282^2 + 153800^2 .

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 90881595524.

It is not an unprimeable number, because it can be changed into a prime (90881595523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5869247 + ... + 5884710.

It is an arithmetic number, because the mean of its divisors is an integer number (13260423617).

Almost surely, 2^90881595524 is an apocalyptic number.

It is an amenable number.

90881595524 is a deficient number, since it is larger than the sum of its proper divisors (68243487880).

90881595524 is a wasteful number, since it uses less digits than its factorization.

90881595524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11755894 (or 11755892 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 56.

The spelling of 90881595524 in words is "ninety billion, eight hundred eighty-one million, five hundred ninety-five thousand, five hundred twenty-four".