79999999999936 has 28 divisors (see below), whose sum is σ = 158920882787520. Its totient is φ = 39956942919680.

The previous prime is 79999999999921. The next prime is 79999999999987. The reversal of 79999999999936 is 63999999999997.

It is a self number, because there is not a number n which added to its sum of digits gives 79999999999936.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672706960 + ... + 672825871.

It is an arithmetic number, because the mean of its divisors is an integer number (5675745813840).

Almost surely, 2^{79999999999936} is an apocalyptic number.

It is an amenable number.

79999999999936 is a deficient number, since it is larger than the sum of its proper divisors (78920882787584).

79999999999936 is a wasteful number, since it uses less digits than its factorization.

79999999999936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345533772 (or 1345533762 counting only the distinct ones).

The product of its digits is 3954013510734, while the sum is 115.

The spelling of 79999999999936 in words is "seventy-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred thirty-six".