79830771312 has 20 divisors (see below), whose sum is σ = 206229492680. Its totient is φ = 26610257088.

The previous prime is 79830771311. The next prime is 79830771329. The reversal of 79830771312 is 21317703897.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

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: 1663141069 = 79830771312 / (7 + 9 + 8 + 3 + 0 + 7 + 7 + 1 + 3 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79830771311) 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, 831570487 + ... + 831570582.

It is an arithmetic number, because the mean of its divisors is an integer number (10311474634).

Almost surely, 2^79830771312 is an apocalyptic number.

It is an amenable number.

79830771312 is an abundant number, since it is smaller than the sum of its proper divisors (126398721368).

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

79830771312 is a wasteful number, since it uses less digits than its factorization.

79830771312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663141080 (or 1663141074 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 48.

The spelling of 79830771312 in words is "seventy-nine billion, eight hundred thirty million, seven hundred seventy-one thousand, three hundred twelve".