12939657144 has 16 divisors (see below), whose sum is σ = 32349142920. Its totient is φ = 4313219040.

The previous prime is 12939657127. The next prime is 12939657161. The reversal of 12939657144 is 44175693921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12939657127) and next prime (12939657161).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269576167 + ... + 269576214.

Almost surely, 2^12939657144 is an apocalyptic number.

It is an amenable number.

12939657144 is an abundant number, since it is smaller than the sum of its proper divisors (19409485776).

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

12939657144 is a wasteful number, since it uses less digits than its factorization.

12939657144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539152390 (or 539152386 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The spelling of 12939657144 in words is "twelve billion, nine hundred thirty-nine million, six hundred fifty-seven thousand, one hundred forty-four".