12899749124 has 12 divisors (see below), whose sum is σ = 23902476444. Its totient is φ = 6070470144.

The previous prime is 12899749069. The next prime is 12899749133. The reversal of 12899749124 is 42194799821.

It can be written as a sum of positive squares in 2 ways, for example, as 6096798724 + 6802950400 = 78082^2 + 82480^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12899749124.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94851029 + ... + 94851164.

It is an arithmetic number, because the mean of its divisors is an integer number (1991873037).

Almost surely, 2^12899749124 is an apocalyptic number.

It is an amenable number.

12899749124 is a deficient number, since it is larger than the sum of its proper divisors (11002727320).

12899749124 is a wasteful number, since it uses less digits than its factorization.

12899749124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189702214 (or 189702212 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 56.

The spelling of 12899749124 in words is "twelve billion, eight hundred ninety-nine million, seven hundred forty-nine thousand, one hundred twenty-four".