79923544015 has 12 divisors (see below), whose sum is σ = 111566743416. Its totient is φ = 54804715728.

The previous prime is 79923543991. The next prime is 79923544073. The reversal of 79923544015 is 51044532997.

It is not a de Polignac number, because 79923544015 - 2¹¹ = 79923541967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79923544015.

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 11 ways as a sum of consecutive naturals, for example, 163109029 + ... + 163109518.

It is an arithmetic number, because the mean of its divisors is an integer number (9297228618).

Almost surely, 2^79923544015 is an apocalyptic number.

79923544015 is a deficient number, since it is larger than the sum of its proper divisors (31643199401).

79923544015 is a wasteful number, since it uses less digits than its factorization.

79923544015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326218566 (or 326218559 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 79923544015 in words is "seventy-nine billion, nine hundred twenty-three million, five hundred forty-four thousand, fifteen".