64758056923577 has 2 divisors, whose sum is σ = 64758056923578. Its totient is φ = 64758056923576.

The previous prime is 64758056923543. The next prime is 64758056923601. The reversal of 64758056923577 is 77532965085746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41942254448656 + 22815802474921 = 6476284^2 + 4776589^2 .

It is a cyclic number.

It is not a de Polignac number, because 64758056923577 - 2¹⁰ = 64758056922553 is a prime.

It is not a weakly prime, because it can be changed into another prime (64758056923477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32379028461788 + 32379028461789.

It is an arithmetic number, because the mean of its divisors is an integer number (32379028461789).

Almost surely, 2^{64758056923577} is an apocalyptic number.

It is an amenable number.

64758056923577 is a deficient number, since it is larger than the sum of its proper divisors (1).

64758056923577 is an equidigital number, since it uses as much as digits as its factorization.

64758056923577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2667168000, while the sum is 74.

The spelling of 64758056923577 in words is "sixty-four trillion, seven hundred fifty-eight billion, fifty-six million, nine hundred twenty-three thousand, five hundred seventy-seven".