79446698641 has 2 divisors, whose sum is σ = 79446698642. Its totient is φ = 79446698640.

The previous prime is 79446698633. The next prime is 79446698651. The reversal of 79446698641 is 14689664497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52936346241 + 26510352400 = 230079^2 + 162820^2 .

It is a cyclic number.

It is not a de Polignac number, because 79446698641 - 2³ = 79446698633 is a prime.

It is not a weakly prime, because it can be changed into another prime (79446698651) 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, 39723349320 + 39723349321.

It is an arithmetic number, because the mean of its divisors is an integer number (39723349321).

Almost surely, 2^79446698641 is an apocalyptic number.

It is an amenable number.

79446698641 is a deficient number, since it is larger than the sum of its proper divisors (1).

79446698641 is an equidigital number, since it uses as much as digits as its factorization.

79446698641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62705664, while the sum is 64.

The spelling of 79446698641 in words is "seventy-nine billion, four hundred forty-six million, six hundred ninety-eight thousand, six hundred forty-one".