64826650131317 has 2 divisors, whose sum is σ = 64826650131318. Its totient is φ = 64826650131316.

The previous prime is 64826650131311. The next prime is 64826650131329. The reversal of 64826650131317 is 71313105662846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44793023032081 + 20033627099236 = 6692759^2 + 4475894^2 .

It is a cyclic number.

It is not a de Polignac number, because 64826650131317 - 2³⁴ = 64809470262133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64826650131311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32413325065658 + 32413325065659.

It is an arithmetic number, because the mean of its divisors is an integer number (32413325065659).

Almost surely, 2^{64826650131317} is an apocalyptic number.

It is an amenable number.

64826650131317 is a deficient number, since it is larger than the sum of its proper divisors (1).

64826650131317 is an equidigital number, since it uses as much as digits as its factorization.

64826650131317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 64826650131317 in words is "sixty-four trillion, eight hundred twenty-six billion, six hundred fifty million, one hundred thirty-one thousand, three hundred seventeen".