13512729664 has 28 divisors (see below), whose sum is σ = 30644941504. Its totient is φ = 5791169664.

The previous prime is 13512729653. The next prime is 13512729677. The reversal of 13512729664 is 46692721531.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (28).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15080724 + ... + 15081619.

Almost surely, 2^13512729664 is an apocalyptic number.

13512729664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13512729664 is an abundant number, since it is smaller than the sum of its proper divisors (17132211840).

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

13512729664 is an equidigital number, since it uses as much as digits as its factorization.

13512729664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30162362 (or 30162352 counting only the distinct ones).

The product of its digits is 544320, while the sum is 46.

The spelling of 13512729664 in words is "thirteen billion, five hundred twelve million, seven hundred twenty-nine thousand, six hundred sixty-four".