79709156271 has 32 divisors (see below), whose sum is σ = 118805875200. Its totient is φ = 52816530240.

The previous prime is 79709156237. The next prime is 79709156281. The reversal of 79709156271 is 17265190797.

It is a happy number.

79709156271 is a `hidden beast` number, since 7 + 9 + 7 + 0 + 9 + 1 + 5 + 627 + 1 = 666.

It is not a de Polignac number, because 79709156271 - 2⁷ = 79709156143 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79709156281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18899755 + ... + 18903971.

It is an arithmetic number, because the mean of its divisors is an integer number (3712683600).

Almost surely, 2^79709156271 is an apocalyptic number.

79709156271 is a deficient number, since it is larger than the sum of its proper divisors (39096718929).

79709156271 is a wasteful number, since it uses less digits than its factorization.

79709156271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8316 (or 8310 counting only the distinct ones).

The product of its (nonzero) digits is 1666980, while the sum is 54.

The spelling of 79709156271 in words is "seventy-nine billion, seven hundred nine million, one hundred fifty-six thousand, two hundred seventy-one".