64682515573213 has 2 divisors, whose sum is σ = 64682515573214. Its totient is φ = 64682515573212.

The previous prime is 64682515573183. The next prime is 64682515573229. The reversal of 64682515573213 is 31237551528646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62860763396484 + 1821752176729 = 7928478^2 + 1349723^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64682515573213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64682515573813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32341257786606 + 32341257786607.

It is an arithmetic number, because the mean of its divisors is an integer number (32341257786607).

Almost surely, 2^{64682515573213} is an apocalyptic number.

It is an amenable number.

64682515573213 is a deficient number, since it is larger than the sum of its proper divisors (1).

64682515573213 is an equidigital number, since it uses as much as digits as its factorization.

64682515573213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288000, while the sum is 58.

The spelling of 64682515573213 in words is "sixty-four trillion, six hundred eighty-two billion, five hundred fifteen million, five hundred seventy-three thousand, two hundred thirteen".