64130515264 has 14 divisors (see below), whose sum is σ = 127258991354. Its totient is φ = 32065257600.

The previous prime is 64130515247. The next prime is 64130515289. The reversal of 64130515264 is 46251503146.

It can be written as a sum of positive squares in only one way, i.e., 61404840000 + 2725675264 = 247800^2 + 52208^2 .

It is a super-2 number, since 2×64130515264² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501019587 + ... + 501019714.

Almost surely, 2^64130515264 is an apocalyptic number.

64130515264 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

64130515264 is a deficient number, since it is larger than the sum of its proper divisors (63128476090).

64130515264 is a wasteful number, since it uses less digits than its factorization.

64130515264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002039313 (or 1002039303 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 64130515264 in words is "sixty-four billion, one hundred thirty million, five hundred fifteen thousand, two hundred sixty-four".