99539684756 has 12 divisors (see below), whose sum is σ = 174233078292. Its totient is φ = 49758805248.

The previous prime is 99539684747. The next prime is 99539684773. The reversal of 99539684756 is 65748693599.

It can be written as a sum of positive squares in 2 ways, for example, as 18627882256 + 80911802500 = 136484^2 + 284450^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 99539684756.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2738975 + ... + 2775078.

It is an arithmetic number, because the mean of its divisors is an integer number (14519423191).

Almost surely, 2^99539684756 is an apocalyptic number.

It is an amenable number.

99539684756 is a deficient number, since it is larger than the sum of its proper divisors (74693393536).

99539684756 is a wasteful number, since it uses less digits than its factorization.

99539684756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5518570 (or 5518568 counting only the distinct ones).

The product of its digits is 440899200, while the sum is 71.

The spelling of 99539684756 in words is "ninety-nine billion, five hundred thirty-nine million, six hundred eighty-four thousand, seven hundred fifty-six".