12981085388 has 12 divisors (see below), whose sum is σ = 22972146120. Its totient is φ = 6417615072.

The previous prime is 12981085331. The next prime is 12981085393. The reversal of 12981085388 is 88358018921.

12981085388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12981085388² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18231506 + ... + 18232217.

It is an arithmetic number, because the mean of its divisors is an integer number (1914345510).

Almost surely, 2^12981085388 is an apocalyptic number.

It is an amenable number.

12981085388 is a deficient number, since it is larger than the sum of its proper divisors (9991060732).

12981085388 is a wasteful number, since it uses less digits than its factorization.

12981085388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36463816 (or 36463814 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 53.

The spelling of 12981085388 in words is "twelve billion, nine hundred eighty-one million, eighty-five thousand, three hundred eighty-eight".