64579372769 has 2 divisors, whose sum is σ = 64579372770. Its totient is φ = 64579372768.

The previous prime is 64579372747. The next prime is 64579372787. The reversal of 64579372769 is 96727397546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42000403600 + 22578969169 = 204940^2 + 150263^2 .

It is a cyclic number.

It is not a de Polignac number, because 64579372769 - 2⁸ = 64579372513 is a prime.

It is a super-2 number, since 2×64579372769² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64579372069) 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, 32289686384 + 32289686385.

It is an arithmetic number, because the mean of its divisors is an integer number (32289686385).

Almost surely, 2^64579372769 is an apocalyptic number.

It is an amenable number.

64579372769 is a deficient number, since it is larger than the sum of its proper divisors (1).

64579372769 is an equidigital number, since it uses as much as digits as its factorization.

64579372769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120022560, while the sum is 65.

The spelling of 64579372769 in words is "sixty-four billion, five hundred seventy-nine million, three hundred seventy-two thousand, seven hundred sixty-nine".