12999907188 has 96 divisors (see below), whose sum is σ = 35217100800. Its totient is φ = 4139210592.

The previous prime is 12999907171. The next prime is 12999907229. The reversal of 12999907188 is 88170999921.

It is a super-2 number, since 2×12999907188² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2041153 + ... + 2047511.

It is an arithmetic number, because the mean of its divisors is an integer number (366844800).

Almost surely, 2^12999907188 is an apocalyptic number.

12999907188 is a gapful number since it is divisible by the number (18) 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 12999907188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17608550400).

12999907188 is an abundant number, since it is smaller than the sum of its proper divisors (22217193612).

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

12999907188 is a wasteful number, since it uses less digits than its factorization.

12999907188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7218 (or 7210 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 63.

The spelling of 12999907188 in words is "twelve billion, nine hundred ninety-nine million, nine hundred seven thousand, one hundred eighty-eight".