79970676361 has 4 divisors (see below), whose sum is σ = 84674833812. Its totient is φ = 75266518912.

The previous prime is 79970676349. The next prime is 79970676389. The reversal of 79970676361 is 16367607997.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16367607997 = 13 ⋅1259046769.

It can be written as a sum of positive squares in 2 ways, for example, as 26681262336 + 53289414025 = 163344^2 + 230845^2 .

It is a cyclic number.

It is not a de Polignac number, because 79970676361 - 2⁵ = 79970676329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79970676361.

It is not an unprimeable number, because it can be changed into a prime (79970676061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2352078700 + ... + 2352078733.

It is an arithmetic number, because the mean of its divisors is an integer number (21168708453).

Almost surely, 2^79970676361 is an apocalyptic number.

It is an amenable number.

79970676361 is a deficient number, since it is larger than the sum of its proper divisors (4704157451).

79970676361 is a wasteful number, since it uses less digits than its factorization.

79970676361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4704157450.

The product of its (nonzero) digits is 18003384, while the sum is 61.

The spelling of 79970676361 in words is "seventy-nine billion, nine hundred seventy million, six hundred seventy-six thousand, three hundred sixty-one".