79609312177 has 4 divisors (see below), whose sum is σ = 79648588656. Its totient is φ = 79570035700.

The previous prime is 79609312157. The next prime is 79609312183. The reversal of 79609312177 is 77121390697.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79609312177 - 2²³ = 79600923569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79609312157) 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 3 ways as a sum of consecutive naturals, for example, 19635199 + ... + 19639252.

It is an arithmetic number, because the mean of its divisors is an integer number (19912147164).

Almost surely, 2^79609312177 is an apocalyptic number.

It is an amenable number.

79609312177 is a deficient number, since it is larger than the sum of its proper divisors (39276479).

79609312177 is a wasteful number, since it uses less digits than its factorization.

79609312177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39276478.

The product of its (nonzero) digits is 1000188, while the sum is 52.

The spelling of 79609312177 in words is "seventy-nine billion, six hundred nine million, three hundred twelve thousand, one hundred seventy-seven".