12997983900 has 72 divisors (see below), whose sum is σ = 41026374144. Its totient is φ = 3151025600.

The previous prime is 12997983871. The next prime is 12997983919. The reversal of 12997983900 is 938979921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1966092 + ... + 1972691.

It is an arithmetic number, because the mean of its divisors is an integer number (569810752).

Almost surely, 2^12997983900 is an apocalyptic number.

12997983900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12997983900 is an abundant number, since it is smaller than the sum of its proper divisors (28028390244).

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

12997983900 is a wasteful number, since it uses less digits than its factorization.

12997983900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938811 (or 3938804 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 57.

The spelling of 12997983900 in words is "twelve billion, nine hundred ninety-seven million, nine hundred eighty-three thousand, nine hundred".