79138177422 has 16 divisors (see below), whose sum is σ = 158485447632. Its totient is φ = 26344543680.

The previous prime is 79138177421. The next prime is 79138177441. The reversal of 79138177422 is 22477183197.

It is a super-2 number, since 2×79138177422² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79138177421) 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, 8707279 + ... + 8716362.

It is an arithmetic number, because the mean of its divisors is an integer number (9905340477).

Almost surely, 2^79138177422 is an apocalyptic number.

79138177422 is an abundant number, since it is smaller than the sum of its proper divisors (79347270210).

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

79138177422 is a wasteful number, since it uses less digits than its factorization.

79138177422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17424403.

The product of its digits is 1185408, while the sum is 51.

The spelling of 79138177422 in words is "seventy-nine billion, one hundred thirty-eight million, one hundred seventy-seven thousand, four hundred twenty-two".