139912974856 has 32 divisors (see below), whose sum is σ = 264579955200. Its totient is φ = 69359293120.

The previous prime is 139912974853. The next prime is 139912974863. The reversal of 139912974856 is 658479219931.

It is not an unprimeable number, because it can be changed into a prime (139912974853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1102041 + ... + 1222423.

It is an arithmetic number, because the mean of its divisors is an integer number (8268123600).

Almost surely, 2^139912974856 is an apocalyptic number.

It is an amenable number.

139912974856 is a deficient number, since it is larger than the sum of its proper divisors (124666980344).

139912974856 is a wasteful number, since it uses less digits than its factorization.

139912974856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121629 (or 121625 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 64.

The spelling of 139912974856 in words is "one hundred thirty-nine billion, nine hundred twelve million, nine hundred seventy-four thousand, eight hundred fifty-six".