99915389522 has 16 divisors (see below), whose sum is σ = 161538498072. Its totient is φ = 46075733760.

The previous prime is 99915389513. The next prime is 99915389543. The reversal of 99915389522 is 22598351999.

99915389522 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 79135878721 + 20779510801 = 281311^2 + 144151^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1596263 + ... + 1657674.

Almost surely, 2^99915389522 is an apocalyptic number.

99915389522 is a deficient number, since it is larger than the sum of its proper divisors (61623108550).

99915389522 is a wasteful number, since it uses less digits than its factorization.

99915389522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3255133.

The product of its digits is 15746400, while the sum is 62.

The spelling of 99915389522 in words is "ninety-nine billion, nine hundred fifteen million, three hundred eighty-nine thousand, five hundred twenty-two".