79427800844 has 24 divisors (see below), whose sum is σ = 163979977728. Its totient is φ = 32942405520.

The previous prime is 79427800841. The next prime is 79427800847. The reversal of 79427800844 is 44800872497.

It is an interprime number because it is at equal distance from previous prime (79427800841) and next prime (79427800847).

It is a super-2 number, since 2×79427800844² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (79427800841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45752474 + ... + 45754209.

It is an arithmetic number, because the mean of its divisors is an integer number (6832499072).

Almost surely, 2^79427800844 is an apocalyptic number.

It is an amenable number.

79427800844 is an abundant number, since it is smaller than the sum of its proper divisors (84552176884).

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

79427800844 is a wasteful number, since it uses less digits than its factorization.

79427800844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91506725 (or 91506723 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 53.

The spelling of 79427800844 in words is "seventy-nine billion, four hundred twenty-seven million, eight hundred thousand, eight hundred forty-four".