6464515530257 has 2 divisors, whose sum is σ = 6464515530258. Its totient is φ = 6464515530256.

The previous prime is 6464515530233. The next prime is 6464515530287. The reversal of 6464515530257 is 7520355154646.

6464515530257 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5157241153936 + 1307274376321 = 2270956^2 + 1143361^2 .

It is a cyclic number.

It is not a de Polignac number, because 6464515530257 - 2⁸ = 6464515530001 is a prime.

It is a super-2 number, since 2×6464515530257² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6464515530199 and 6464515530208.

It is not a weakly prime, because it can be changed into another prime (6464515530287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3232257765128 + 3232257765129.

It is an arithmetic number, because the mean of its divisors is an integer number (3232257765129).

Almost surely, 2^{6464515530257} is an apocalyptic number.

It is an amenable number.

6464515530257 is a deficient number, since it is larger than the sum of its proper divisors (1).

6464515530257 is an equidigital number, since it uses as much as digits as its factorization.

6464515530257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120000, while the sum is 53.

The spelling of 6464515530257 in words is "six trillion, four hundred sixty-four billion, five hundred fifteen million, five hundred thirty thousand, two hundred fifty-seven".