79659390769 has 16 divisors (see below), whose sum is σ = 92968508160. Its totient is φ = 66838449600.

The previous prime is 79659390697. The next prime is 79659390787. The reversal of 79659390769 is 96709395697.

It is a cyclic number.

It is not a de Polignac number, because 79659390769 - 2¹⁵ = 79659358001 is a prime.

It is a super-2 number, since 2×79659390769² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79659390698 and 79659390707.

It is not an unprimeable number, because it can be changed into a prime (79659396769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81682 + ... + 407419.

It is an arithmetic number, because the mean of its divisors is an integer number (5810531760).

Almost surely, 2^79659390769 is an apocalyptic number.

It is an amenable number.

79659390769 is a deficient number, since it is larger than the sum of its proper divisors (13309117391).

79659390769 is a wasteful number, since it uses less digits than its factorization.

79659390769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489600.

The product of its (nonzero) digits is 173604060, while the sum is 70.

The spelling of 79659390769 in words is "seventy-nine billion, six hundred fifty-nine million, three hundred ninety thousand, seven hundred sixty-nine".