79051665615 has 24 divisors (see below), whose sum is σ = 136960523280. Its totient is φ = 38917741824.

The previous prime is 79051665613. The next prime is 79051665673. The reversal of 79051665615 is 51656615097.

It is not a de Polignac number, because 79051665615 - 2¹ = 79051665613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79051665613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15589510 + ... + 15594579.

It is an arithmetic number, because the mean of its divisors is an integer number (5706688470).

Almost surely, 2^79051665615 is an apocalyptic number.

79051665615 is a deficient number, since it is larger than the sum of its proper divisors (57908857665).

79051665615 is a wasteful number, since it uses less digits than its factorization.

79051665615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31184123 (or 31184110 counting only the distinct ones).

The product of its (nonzero) digits is 1701000, while the sum is 51.

The spelling of 79051665615 in words is "seventy-nine billion, fifty-one million, six hundred sixty-five thousand, six hundred fifteen".