99509239071913 has 48 divisors (see below), whose sum is σ = 116284654176768. Its totient is φ = 84794300236800.

The previous prime is 99509239071899. The next prime is 99509239071937. The reversal of 99509239071913 is 31917093290599.

It is not a de Polignac number, because 99509239071913 - 2²⁵ = 99509205517481 is a prime.

It is a super-2 number, since 2×99509239071913² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99509239071013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1484447845 + ... + 1484514877.

It is an arithmetic number, because the mean of its divisors is an integer number (2422596962016).

Almost surely, 2^{99509239071913} is an apocalyptic number.

It is an amenable number.

99509239071913 is a deficient number, since it is larger than the sum of its proper divisors (16775415104855).

99509239071913 is a wasteful number, since it uses less digits than its factorization.

99509239071913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70006 (or 69995 counting only the distinct ones).

The product of its (nonzero) digits is 37200870, while the sum is 67.

The spelling of 99509239071913 in words is "ninety-nine trillion, five hundred nine billion, two hundred thirty-nine million, seventy-one thousand, nine hundred thirteen".