79397706497 has 2 divisors, whose sum is σ = 79397706498. Its totient is φ = 79397706496.

The previous prime is 79397706481. The next prime is 79397706517. The reversal of 79397706497 is 79460779397.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79390951696 + 6754801 = 281764^2 + 2599^2 .

It is a cyclic number.

It is not a de Polignac number, because 79397706497 - 2⁴ = 79397706481 is a prime.

It is a super-2 number, since 2×79397706497² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79397709497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39698853248 + 39698853249.

It is an arithmetic number, because the mean of its divisors is an integer number (39698853249).

Almost surely, 2^79397706497 is an apocalyptic number.

It is an amenable number.

79397706497 is a deficient number, since it is larger than the sum of its proper divisors (1).

79397706497 is an equidigital number, since it uses as much as digits as its factorization.

79397706497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126023688, while the sum is 68.

The spelling of 79397706497 in words is "seventy-nine billion, three hundred ninety-seven million, seven hundred six thousand, four hundred ninety-seven".