79943857968 has 320 divisors, whose sum is σ = 242704465920. Its totient is φ = 22455014400.

The previous prime is 79943857963. The next prime is 79943858009. The reversal of 79943857968 is 86975834997.

Its product of digits (823011840) is a multiple of the sum of its prime factors (1008).

It is a self number, because there is not a number n which added to its sum of digits gives 79943857968.

It is not an unprimeable number, because it can be changed into a prime (79943857963) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 162818203 + ... + 162818693.

It is an arithmetic number, because the mean of its divisors is an integer number (758451456).

Almost surely, 2^79943857968 is an apocalyptic number.

79943857968 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79943857968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121352232960).

79943857968 is an abundant number, since it is smaller than the sum of its proper divisors (162760607952).

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

79943857968 is a wasteful number, since it uses less digits than its factorization.

79943857968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008 (or 1002 counting only the distinct ones).

The product of its digits is 823011840, while the sum is 75.

The spelling of 79943857968 in words is "seventy-nine billion, nine hundred forty-three million, eight hundred fifty-seven thousand, nine hundred sixty-eight".