79915118399 has 8 divisors (see below), whose sum is σ = 80000680320. Its totient is φ = 79829600896.

The previous prime is 79915118363. The next prime is 79915118411. The reversal of 79915118399 is 99381151997.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79915118399 is a prime.

It is a super-2 number, since 2×79915118399² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79915118299) 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, 4529507 + ... + 4547115.

It is an arithmetic number, because the mean of its divisors is an integer number (10000085040).

Almost surely, 2^79915118399 is an apocalyptic number.

79915118399 is a deficient number, since it is larger than the sum of its proper divisors (85561921).

79915118399 is a wasteful number, since it uses less digits than its factorization.

79915118399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22209.

The product of its digits is 5511240, while the sum is 62.

The spelling of 79915118399 in words is "seventy-nine billion, nine hundred fifteen million, one hundred eighteen thousand, three hundred ninety-nine".