13081729152 has 32 divisors (see below), whose sum is σ = 34748344080. Its totient is φ = 4360576256.

The previous prime is 13081729127. The next prime is 13081729183. The reversal of 13081729152 is 25192718031.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×13081729152² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13081729152.

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, 17033118 + ... + 17033885.

Almost surely, 2^13081729152 is an apocalyptic number.

13081729152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13081729152 is an abundant number, since it is smaller than the sum of its proper divisors (21666614928).

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

13081729152 is an equidigital number, since it uses as much as digits as its factorization.

13081729152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34067020 (or 34067008 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 39.

The spelling of 13081729152 in words is "thirteen billion, eighty-one million, seven hundred twenty-nine thousand, one hundred fifty-two".