79921293396 has 72 divisors (see below), whose sum is σ = 221022315360. Its totient is φ = 22403803968.

The previous prime is 79921293313. The next prime is 79921293407. The reversal of 79921293396 is 69339212997.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1251106 + ... + 1313433.

It is an arithmetic number, because the mean of its divisors is an integer number (3069754380).

Almost surely, 2^79921293396 is an apocalyptic number.

It is an amenable number.

79921293396 is an abundant number, since it is smaller than the sum of its proper divisors (141101021964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79921293396 is a wasteful number, since it uses less digits than its factorization.

79921293396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564613 (or 2564604 counting only the distinct ones).

The product of its digits is 9920232, while the sum is 60.

The spelling of 79921293396 in words is "seventy-nine billion, nine hundred twenty-one million, two hundred ninety-three thousand, three hundred ninety-six".