64317337727 has 2 divisors, whose sum is σ = 64317337728. Its totient is φ = 64317337726.

The previous prime is 64317337723. The next prime is 64317337739. The reversal of 64317337727 is 72773371346.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64317337727 - 2² = 64317337723 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64317337723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32158668863 + 32158668864.

It is an arithmetic number, because the mean of its divisors is an integer number (32158668864).

Almost surely, 2^64317337727 is an apocalyptic number.

64317337727 is a deficient number, since it is larger than the sum of its proper divisors (1).

64317337727 is an equidigital number, since it uses as much as digits as its factorization.

64317337727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3111696, while the sum is 50.

The spelling of 64317337727 in words is "sixty-four billion, three hundred seventeen million, three hundred thirty-seven thousand, seven hundred twenty-seven".