64770585317 has 2 divisors, whose sum is σ = 64770585318. Its totient is φ = 64770585316.

The previous prime is 64770585307. The next prime is 64770585323. The reversal of 64770585317 is 71358507746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64767196036 + 3389281 = 254494^2 + 1841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64770585317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64770585307) 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, 32385292658 + 32385292659.

It is an arithmetic number, because the mean of its divisors is an integer number (32385292659).

Almost surely, 2^64770585317 is an apocalyptic number.

It is an amenable number.

64770585317 is a deficient number, since it is larger than the sum of its proper divisors (1).

64770585317 is an equidigital number, since it uses as much as digits as its factorization.

64770585317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4939200, while the sum is 53.

The spelling of 64770585317 in words is "sixty-four billion, seven hundred seventy million, five hundred eighty-five thousand, three hundred seventeen".