64135013251512 has 32 divisors (see below), whose sum is σ = 183242895004800. Its totient is φ = 18324289500384.

The previous prime is 64135013251511. The next prime is 64135013251567. The reversal of 64135013251512 is 21515231053146.

It is a super-2 number, since 2×64135013251512² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64135013251511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190878015462 + ... + 190878015797.

It is an arithmetic number, because the mean of its divisors is an integer number (5726340468900).

Almost surely, 2^{64135013251512} is an apocalyptic number.

It is an amenable number.

64135013251512 is an abundant number, since it is smaller than the sum of its proper divisors (119107881753288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64135013251512 is a wasteful number, since it uses less digits than its factorization.

64135013251512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381756031275 (or 381756031271 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 64135013251512 in words is "sixty-four trillion, one hundred thirty-five billion, thirteen million, two hundred fifty-one thousand, five hundred twelve".