12983639820 has 24 divisors (see below), whose sum is σ = 36354191664. Its totient is φ = 3462303936.

The previous prime is 12983639819. The next prime is 12983639833. The reversal of 12983639820 is 2893638921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108196939 + ... + 108197058.

It is an arithmetic number, because the mean of its divisors is an integer number (1514757986).

Almost surely, 2^12983639820 is an apocalyptic number.

12983639820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12983639820 is an abundant number, since it is smaller than the sum of its proper divisors (23370551844).

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

12983639820 is a wasteful number, since it uses less digits than its factorization.

12983639820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216394009 (or 216394007 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 12983639820 in words is "twelve billion, nine hundred eighty-three million, six hundred thirty-nine thousand, eight hundred twenty".