99999999991695 has 32 divisors (see below), whose sum is σ = 167251939614720. Its totient is φ = 50959575313920.

The previous prime is 99999999991687. The next prime is 99999999991711. The reversal of 99999999991695 is 59619999999999.

It is not a de Polignac number, because 99999999991695 - 2³ = 99999999991687 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1361063034 + ... + 1361136503.

It is an arithmetic number, because the mean of its divisors is an integer number (5226623112960).

Almost surely, 2^{99999999991695} is an apocalyptic number.

99999999991695 is a deficient number, since it is larger than the sum of its proper divisors (67251939623025).

99999999991695 is a wasteful number, since it uses less digits than its factorization.

99999999991695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722199655.

The product of its digits is 941431788270, while the sum is 111.

The spelling of 99999999991695 in words is "ninety-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-one thousand, six hundred ninety-five".