79975356709 has 6 divisors (see below), whose sum is σ = 82828224050. Its totient is φ = 77217584976.

The previous prime is 79975356701. The next prime is 79975356749. The reversal of 79975356709 is 90765357997.

It can be written as a sum of positive squares in 3 ways, for example, as 11587876609 + 68387480100 = 107647^2 + 261510^2 .

It is not a de Polignac number, because 79975356709 - 2³ = 79975356701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79975356701) 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 5 ways as a sum of consecutive naturals, for example, 47546934 + ... + 47548615.

Almost surely, 2^79975356709 is an apocalyptic number.

It is an amenable number.

79975356709 is a deficient number, since it is larger than the sum of its proper divisors (2852867341).

79975356709 is an equidigital number, since it uses as much as digits as its factorization.

79975356709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95095607 (or 95095578 counting only the distinct ones).

The product of its (nonzero) digits is 112521150, while the sum is 67.

The spelling of 79975356709 in words is "seventy-nine billion, nine hundred seventy-five million, three hundred fifty-six thousand, seven hundred nine".