99599999999 has 32 divisors (see below), whose sum is σ = 103503536640. Its totient is φ = 95799600000.

The previous prime is 99599999951. The next prime is 99600000001. The reversal of 99599999999 is 99999999599.

It is a cyclic number.

It is not a de Polignac number, because 99599999999 - 2²⁸ = 99331564543 is a prime.

It is a Duffinian number.

99599999999 is a modest number, since divided by 999999 gives 99599 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99599999909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 359566649 + ... + 359566925.

It is an arithmetic number, because the mean of its divisors is an integer number (3234485520).

Almost surely, 2^99599999999 is an apocalyptic number.

99599999999 is a deficient number, since it is larger than the sum of its proper divisors (3903536641).

99599999999 is a wasteful number, since it uses less digits than its factorization.

99599999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911.

The product of its digits is 17433922005, while the sum is 95.

The spelling of 99599999999 in words is "ninety-nine billion, five hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".