79522371643 has 12 divisors (see below), whose sum is σ = 94132650304. Its totient is φ = 66732058800.

The previous prime is 79522371641. The next prime is 79522371653. The reversal of 79522371643 is 34617322597.

It is not a de Polignac number, because 79522371643 - 2¹ = 79522371641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79522371641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25275723 + ... + 25278868.

Almost surely, 2^79522371643 is an apocalyptic number.

79522371643 is a deficient number, since it is larger than the sum of its proper divisors (14610278661).

79522371643 is a wasteful number, since it uses less digits than its factorization.

79522371643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50554626 (or 50554615 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 49.

The spelling of 79522371643 in words is "seventy-nine billion, five hundred twenty-two million, three hundred seventy-one thousand, six hundred forty-three".