12981708723408 has 20 divisors (see below), whose sum is σ = 33536080868928. Its totient is φ = 4327236241120.

The previous prime is 12981708723329. The next prime is 12981708723413. The reversal of 12981708723408 is 80432780718921.

It is a super-2 number, since 2×12981708723408² (a number of 27 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 3 ways as a sum of consecutive naturals, for example, 135226132488 + ... + 135226132583.

Almost surely, 2^{12981708723408} is an apocalyptic number.

It is an amenable number.

12981708723408 is an abundant number, since it is smaller than the sum of its proper divisors (20554372145520).

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

12981708723408 is a wasteful number, since it uses less digits than its factorization.

12981708723408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270452265082 (or 270452265076 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 60.

The spelling of 12981708723408 in words is "twelve trillion, nine hundred eighty-one billion, seven hundred eight million, seven hundred twenty-three thousand, four hundred eight".