79918508737 has 2 divisors, whose sum is σ = 79918508738. Its totient is φ = 79918508736.

The previous prime is 79918508711. The next prime is 79918508743. The reversal of 79918508737 is 73780581997.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62140019841 + 17778488896 = 249279^2 + 133336^2 .

It is an emirp because it is prime and its reverse (73780581997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79918508737 - 2⁷ = 79918508609 is a prime.

It is not a weakly prime, because it can be changed into another prime (79918508777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39959254368 + 39959254369.

It is an arithmetic number, because the mean of its divisors is an integer number (39959254369).

Almost surely, 2^79918508737 is an apocalyptic number.

It is an amenable number.

79918508737 is a deficient number, since it is larger than the sum of its proper divisors (1).

79918508737 is an equidigital number, since it uses as much as digits as its factorization.

79918508737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26671680, while the sum is 64.

The spelling of 79918508737 in words is "seventy-nine billion, nine hundred eighteen million, five hundred eight thousand, seven hundred thirty-seven".