12939372840 has 32 divisors (see below), whose sum is σ = 38818118880. Its totient is φ = 3450499392.

The previous prime is 12939372839. The next prime is 12939372841. The reversal of 12939372840 is 4827393921.

It is an interprime number because it is at equal distance from previous prime (12939372839) and next prime (12939372841).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12939372840.

It is not an unprimeable number, because it can be changed into a prime (12939372841) 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, 53913934 + ... + 53914173.

It is an arithmetic number, because the mean of its divisors is an integer number (1213066215).

Almost surely, 2^12939372840 is an apocalyptic number.

12939372840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12939372840 is an abundant number, since it is smaller than the sum of its proper divisors (25878746040).

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

12939372840 is a wasteful number, since it uses less digits than its factorization.

12939372840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107828121 (or 107828117 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 12939372840 in words is "twelve billion, nine hundred thirty-nine million, three hundred seventy-two thousand, eight hundred forty".