99136172570 has 16 divisors (see below), whose sum is σ = 178881414120. Its totient is φ = 39557512704.

The previous prime is 99136172497. The next prime is 99136172573. The reversal of 99136172570 is 7527163199.

99136172570 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 98658181801 + 477990769 = 314099^2 + 21863^2 .

It is not an unprimeable number, because it can be changed into a prime (99136172573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12115247 + ... + 12123426.

Almost surely, 2^99136172570 is an apocalyptic number.

99136172570 is a deficient number, since it is larger than the sum of its proper divisors (79745241550).

99136172570 is a wasteful number, since it uses less digits than its factorization.

99136172570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24239089.

The product of its (nonzero) digits is 714420, while the sum is 50.

The spelling of 99136172570 in words is "ninety-nine billion, one hundred thirty-six million, one hundred seventy-two thousand, five hundred seventy".