99885665795 has 24 divisors (see below), whose sum is σ = 127664230320. Its totient is φ = 75008151360.

The previous prime is 99885665779. The next prime is 99885665807. The reversal of 99885665795 is 59756658899.

It is not a de Polignac number, because 99885665795 - 2⁴ = 99885665779 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57101 + ... + 450590.

It is an arithmetic number, because the mean of its divisors is an integer number (5319342930).

Almost surely, 2^99885665795 is an apocalyptic number.

99885665795 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

99885665795 is a deficient number, since it is larger than the sum of its proper divisors (27778564525).

99885665795 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (99885665794) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (507824).

99885665795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507843 (or 507824 counting only the distinct ones).

The product of its digits is 1469664000, while the sum is 77.

The spelling of 99885665795 in words is "ninety-nine billion, eight hundred eighty-five million, six hundred sixty-five thousand, seven hundred ninety-five".