12899591952 has 160 divisors (see below), whose sum is σ = 37649756928. Its totient is φ = 3776053248.

The previous prime is 12899591927. The next prime is 12899591983. The reversal of 12899591952 is 25919599821.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2767608 + ... + 2772264.

Almost surely, 2^12899591952 is an apocalyptic number.

12899591952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12899591952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18824878464).

12899591952 is an abundant number, since it is smaller than the sum of its proper divisors (24750164976).

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

12899591952 is a wasteful number, since it uses less digits than its factorization.

12899591952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4897 (or 4891 counting only the distinct ones).

The product of its digits is 5248800, while the sum is 60.

The spelling of 12899591952 in words is "twelve billion, eight hundred ninety-nine million, five hundred ninety-one thousand, nine hundred fifty-two".