99981175204 has 81 divisors (see below), whose sum is σ = 189416850147. Its totient is φ = 46169967168.

The previous prime is 99981175181. The next prime is 99981175241. The reversal of 99981175204 is 40257118999.

The square root of 99981175204 is 316198.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 24029604 + 99957145600 = 4902^2 + 316160^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 636822694 + ... + 636822850.

Almost surely, 2^99981175204 is an apocalyptic number.

99981175204 is the 316198-th square number.

It is an amenable number.

99981175204 is a deficient number, since it is larger than the sum of its proper divisors (89435674943).

99981175204 is a wasteful number, since it uses less digits than its factorization.

99981175204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 55.

The spelling of 99981175204 in words is "ninety-nine billion, nine hundred eighty-one million, one hundred seventy-five thousand, two hundred four".