79756065799 has 2 divisors, whose sum is σ = 79756065800. Its totient is φ = 79756065798.

The previous prime is 79756065793. The next prime is 79756065821. The reversal of 79756065799 is 99756065797.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79756065799 - 2⁹ = 79756065287 is a prime.

It is a super-2 number, since 2×79756065799² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79756065793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39878032899 + 39878032900.

It is an arithmetic number, because the mean of its divisors is an integer number (39878032900).

Almost surely, 2^79756065799 is an apocalyptic number.

79756065799 is a deficient number, since it is larger than the sum of its proper divisors (1).

79756065799 is an equidigital number, since it uses as much as digits as its factorization.

79756065799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225042300, while the sum is 70.

The spelling of 79756065799 in words is "seventy-nine billion, seven hundred fifty-six million, sixty-five thousand, seven hundred ninety-nine".