90564880845 has 32 divisors (see below), whose sum is σ = 152048793600. Its totient is φ = 45943075904.

The previous prime is 90564880843. The next prime is 90564880849. The reversal of 90564880845 is 54808846509.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 90564880845 - 2¹ = 90564880843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90564880843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 671505 + ... + 795014.

It is an arithmetic number, because the mean of its divisors is an integer number (4751524800).

Almost surely, 2^90564880845 is an apocalyptic number.

It is an amenable number.

90564880845 is a deficient number, since it is larger than the sum of its proper divisors (61483912755).

90564880845 is a wasteful number, since it uses less digits than its factorization.

90564880845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466729.

The product of its (nonzero) digits is 11059200, while the sum is 57.

The spelling of 90564880845 in words is "ninety billion, five hundred sixty-four million, eight hundred eighty thousand, eight hundred forty-five".