79687578698 has 16 divisors (see below), whose sum is σ = 147115530240. Its totient is φ = 31524756336.

The previous prime is 79687578683. The next prime is 79687578743. The reversal of 79687578698 is 89687578697.

It is a super-2 number, since 2×79687578698² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218921738 + ... + 218922101.

It is an arithmetic number, because the mean of its divisors is an integer number (9194720640).

Almost surely, 2^79687578698 is an apocalyptic number.

79687578698 is a deficient number, since it is larger than the sum of its proper divisors (67427951542).

79687578698 is a wasteful number, since it uses less digits than its factorization.

79687578698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437843861.

The product of its digits is 2560481280, while the sum is 80.

Subtracting 79687578698 from its reverse (89687578697), we obtain a palindrome (9999999999).

The spelling of 79687578698 in words is "seventy-nine billion, six hundred eighty-seven million, five hundred seventy-eight thousand, six hundred ninety-eight".