79696811251 has 2 divisors, whose sum is σ = 79696811252. Its totient is φ = 79696811250.

The previous prime is 79696811231. The next prime is 79696811263. The reversal of 79696811251 is 15211869697.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79696811251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79696811192 and 79696811201.

It is not a weakly prime, because it can be changed into another prime (79696811231) 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 as a sum of consecutive naturals, namely, 39848405625 + 39848405626.

It is an arithmetic number, because the mean of its divisors is an integer number (39848405626).

Almost surely, 2^79696811251 is an apocalyptic number.

79696811251 is a deficient number, since it is larger than the sum of its proper divisors (1).

79696811251 is an equidigital number, since it uses as much as digits as its factorization.

79696811251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 55.

The spelling of 79696811251 in words is "seventy-nine billion, six hundred ninety-six million, eight hundred eleven thousand, two hundred fifty-one".