64671201317 has 2 divisors, whose sum is σ = 64671201318. Its totient is φ = 64671201316.

The previous prime is 64671201311. The next prime is 64671201347. The reversal of 64671201317 is 71310217646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62347093636 + 2324107681 = 249694^2 + 48209^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64671201317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64671201311) 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, 32335600658 + 32335600659.

It is an arithmetic number, because the mean of its divisors is an integer number (32335600659).

Almost surely, 2^64671201317 is an apocalyptic number.

It is an amenable number.

64671201317 is a deficient number, since it is larger than the sum of its proper divisors (1).

64671201317 is an equidigital number, since it uses as much as digits as its factorization.

64671201317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 64671201317 in words is "sixty-four billion, six hundred seventy-one million, two hundred one thousand, three hundred seventeen".