90565765938 has 48 divisors (see below), whose sum is σ = 200124288000. Its totient is φ = 29591762400.

The previous prime is 90565765933. The next prime is 90565765957. The reversal of 90565765938 is 83956756509.

90565765938 is a `hidden beast` number, since 9 + 0 + 5 + 6 + 576 + 59 + 3 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (90565765933) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 248463 + ... + 492813.

It is an arithmetic number, because the mean of its divisors is an integer number (4169256000).

Almost surely, 2^90565765938 is an apocalyptic number.

90565765938 is an abundant number, since it is smaller than the sum of its proper divisors (109558522062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90565765938 is a wasteful number, since it uses less digits than its factorization.

90565765938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244767 (or 244764 counting only the distinct ones).

The product of its (nonzero) digits is 61236000, while the sum is 63.

The spelling of 90565765938 in words is "ninety billion, five hundred sixty-five million, seven hundred sixty-five thousand, nine hundred thirty-eight".