99349816831865 has 64 divisors (see below), whose sum is σ = 127076950725120. Its totient is φ = 74456072570880.

The previous prime is 99349816831843. The next prime is 99349816831873. The reversal of 99349816831865 is 56813861894399.

It is not a de Polignac number, because 99349816831865 - 2³⁴ = 99332636962681 is a prime.

It is a super-2 number, since 2×99349816831865² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99349816831865.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4053593231 + ... + 4053617739.

It is an arithmetic number, because the mean of its divisors is an integer number (1985577355080).

Almost surely, 2^{99349816831865} is an apocalyptic number.

It is an amenable number.

99349816831865 is a deficient number, since it is larger than the sum of its proper divisors (27727133893255).

99349816831865 is a wasteful number, since it uses less digits than its factorization.

99349816831865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31842.

The product of its digits is 2418647040, while the sum is 80.

The spelling of 99349816831865 in words is "ninety-nine trillion, three hundred forty-nine billion, eight hundred sixteen million, eight hundred thirty-one thousand, eight hundred sixty-five".