79518458019 has 384 divisors, whose sum is σ = 160771932160. Its totient is φ = 33872256000.

The previous prime is 79518458017. The next prime is 79518458029. The reversal of 79518458019 is 91085481597.

It is not a de Polignac number, because 79518458019 - 2¹ = 79518458017 is a prime.

It is a super-2 number, since 2×79518458019² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 79518458019.

It is not an unprimeable number, because it can be changed into a prime (79518458011) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 1186842624 + ... + 1186842690.

Almost surely, 2^79518458019 is an apocalyptic number.

79518458019 is an abundant number, since it is smaller than the sum of its proper divisors (81253474141).

79518458019 is a wasteful number, since it uses less digits than its factorization.

79518458019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 57.

The spelling of 79518458019 in words is "seventy-nine billion, five hundred eighteen million, four hundred fifty-eight thousand, nineteen".