79519906815 has 8 divisors (see below), whose sum is σ = 127231850928. Its totient is φ = 42410616960.

The previous prime is 79519906813. The next prime is 79519906933. The reversal of 79519906815 is 51860991597.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79519906815 - 2¹ = 79519906813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79519906813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2650663546 + ... + 2650663575.

It is an arithmetic number, because the mean of its divisors is an integer number (15903981366).

Almost surely, 2^79519906815 is an apocalyptic number.

79519906815 is a deficient number, since it is larger than the sum of its proper divisors (47711944113).

79519906815 is a wasteful number, since it uses less digits than its factorization.

79519906815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5301327129.

The product of its (nonzero) digits is 6123600, while the sum is 60.

The spelling of 79519906815 in words is "seventy-nine billion, five hundred nineteen million, nine hundred six thousand, eight hundred fifteen".