99959020775 has 12 divisors (see below), whose sum is σ = 125176408584. Its totient is φ = 79175460000.

The previous prime is 99959020753. The next prime is 99959020787. The reversal of 99959020775 is 57702095999.

It is not a de Polignac number, because 99959020775 - 2¹⁸ = 99958758631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19791341 + ... + 19796390.

It is an arithmetic number, because the mean of its divisors is an integer number (10431367382).

Almost surely, 2^99959020775 is an apocalyptic number.

99959020775 is a deficient number, since it is larger than the sum of its proper divisors (25217387809).

99959020775 is a wasteful number, since it uses less digits than its factorization.

99959020775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39587842 (or 39587837 counting only the distinct ones).

The product of its (nonzero) digits is 16074450, while the sum is 62.

The spelling of 99959020775 in words is "ninety-nine billion, nine hundred fifty-nine million, twenty thousand, seven hundred seventy-five".