12499181912 has 32 divisors (see below), whose sum is σ = 26790220800. Its totient is φ = 5355540384.

The previous prime is 12499181887. The next prime is 12499181951. The reversal of 12499181912 is 21918199421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239639 + ... + 287097.

It is an arithmetic number, because the mean of its divisors is an integer number (837194400).

Almost surely, 2^12499181912 is an apocalyptic number.

It is an amenable number.

12499181912 is an abundant number, since it is smaller than the sum of its proper divisors (14291038888).

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

12499181912 is a wasteful number, since it uses less digits than its factorization.

12499181912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52175 (or 52171 counting only the distinct ones).

The product of its digits is 93312, while the sum is 47.

The spelling of 12499181912 in words is "twelve billion, four hundred ninety-nine million, one hundred eighty-one thousand, nine hundred twelve".