79863913929 has 16 divisors (see below), whose sum is σ = 112443324480. Its totient is φ = 50281237440.

The previous prime is 79863913873. The next prime is 79863913931. The reversal of 79863913929 is 92931936897.

It is a happy number.

It is not a de Polignac number, because 79863913929 - 2²⁴ = 79847136713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79863913929.

It is not an unprimeable number, because it can be changed into a prime (79863913229) 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, 2191902 + ... + 2228039.

It is an arithmetic number, because the mean of its divisors is an integer number (7027707780).

Almost surely, 2^79863913929 is an apocalyptic number.

It is an amenable number.

79863913929 is a deficient number, since it is larger than the sum of its proper divisors (32579410551).

79863913929 is a wasteful number, since it uses less digits than its factorization.

79863913929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420280.

The product of its digits is 39680928, while the sum is 66.

The spelling of 79863913929 in words is "seventy-nine billion, eight hundred sixty-three million, nine hundred thirteen thousand, nine hundred twenty-nine".