79643357444 has 48 divisors (see below), whose sum is σ = 161168410368. Its totient is φ = 33732018048.

The previous prime is 79643357413. The next prime is 79643357447. The reversal of 79643357444 is 44475334697.

It is a self number, because there is not a number n which added to its sum of digits gives 79643357444.

It is not an unprimeable number, because it can be changed into a prime (79643357447) 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, 759722 + ... + 858174.

It is an arithmetic number, because the mean of its divisors is an integer number (3357675216).

Almost surely, 2^79643357444 is an apocalyptic number.

It is an amenable number.

79643357444 is an abundant number, since it is smaller than the sum of its proper divisors (81525052924).

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

79643357444 is a wasteful number, since it uses less digits than its factorization.

79643357444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98804 (or 98802 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 56.

The spelling of 79643357444 in words is "seventy-nine billion, six hundred forty-three million, three hundred fifty-seven thousand, four hundred forty-four".