90566172764 has 48 divisors (see below), whose sum is σ = 165804334080. Its totient is φ = 43234283520.

The previous prime is 90566172761. The next prime is 90566172779. The reversal of 90566172764 is 46727166509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90566172761) 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, 7908827 + ... + 7920269.

It is an arithmetic number, because the mean of its divisors is an integer number (3454256960).

Almost surely, 2^90566172764 is an apocalyptic number.

It is an amenable number.

90566172764 is a deficient number, since it is larger than the sum of its proper divisors (75238161316).

90566172764 is a wasteful number, since it uses less digits than its factorization.

90566172764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12330 (or 12328 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 90566172764 in words is "ninety billion, five hundred sixty-six million, one hundred seventy-two thousand, seven hundred sixty-four".