79641057337 has 2 divisors, whose sum is σ = 79641057338. Its totient is φ = 79641057336.

The previous prime is 79641057323. The next prime is 79641057451. The reversal of 79641057337 is 73375014697.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70980149241 + 8660908096 = 266421^2 + 93064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79641057337 is a prime.

It is not a weakly prime, because it can be changed into another prime (79641057637) 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, 39820528668 + 39820528669.

It is an arithmetic number, because the mean of its divisors is an integer number (39820528669).

Almost surely, 2^79641057337 is an apocalyptic number.

It is an amenable number.

79641057337 is a deficient number, since it is larger than the sum of its proper divisors (1).

79641057337 is an equidigital number, since it uses as much as digits as its factorization.

79641057337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3333960, while the sum is 52.

The spelling of 79641057337 in words is "seventy-nine billion, six hundred forty-one million, fifty-seven thousand, three hundred thirty-seven".