79046921136 has 20 divisors (see below), whose sum is σ = 204204546392. Its totient is φ = 26348973696.

The previous prime is 79046921077. The next prime is 79046921137. The reversal of 79046921136 is 63112964097.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1646810857 = 79046921136 / (7 + 9 + 0 + 4 + 6 + 9 + 2 + 1 + 1 + 3 + 6).

It is not an unprimeable number, because it can be changed into a prime (79046921137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823405381 + ... + 823405476.

Almost surely, 2^79046921136 is an apocalyptic number.

It is an amenable number.

79046921136 is an abundant number, since it is smaller than the sum of its proper divisors (125157625256).

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

79046921136 is a wasteful number, since it uses less digits than its factorization.

79046921136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646810868 (or 1646810862 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 48.

The spelling of 79046921136 in words is "seventy-nine billion, forty-six million, nine hundred twenty-one thousand, one hundred thirty-six".