64031137613 has 2 divisors, whose sum is σ = 64031137614. Its totient is φ = 64031137612.

The previous prime is 64031137543. The next prime is 64031137633. The reversal of 64031137613 is 31673113046.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51237944164 + 12793193449 = 226358^2 + 113107^2 .

It is a cyclic number.

It is not a de Polignac number, because 64031137613 - 2¹⁴ = 64031121229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64031137633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32015568806 + 32015568807.

It is an arithmetic number, because the mean of its divisors is an integer number (32015568807).

Almost surely, 2^64031137613 is an apocalyptic number.

It is an amenable number.

64031137613 is a deficient number, since it is larger than the sum of its proper divisors (1).

64031137613 is an equidigital number, since it uses as much as digits as its factorization.

64031137613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 35.

The spelling of 64031137613 in words is "sixty-four billion, thirty-one million, one hundred thirty-seven thousand, six hundred thirteen".