139531812928 has 28 divisors (see below), whose sum is σ = 276975417600. Its totient is φ = 69742731392.

The previous prime is 139531812907. The next prime is 139531812947. The reversal of 139531812928 is 829218135931.

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, 167128 + ... + 554071.

It is an arithmetic number, because the mean of its divisors is an integer number (9891979200).

Almost surely, 2^139531812928 is an apocalyptic number.

It is an amenable number.

139531812928 is a deficient number, since it is larger than the sum of its proper divisors (137443604672).

139531812928 is an equidigital number, since it uses as much as digits as its factorization.

139531812928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724234 (or 724224 counting only the distinct ones).

The product of its digits is 933120, while the sum is 52.

The spelling of 139531812928 in words is "one hundred thirty-nine billion, five hundred thirty-one million, eight hundred twelve thousand, nine hundred twenty-eight".