12660513020 has 24 divisors (see below), whose sum is σ = 28151023824. Its totient is φ = 4766310656.

The previous prime is 12660513013. The next prime is 12660513049. The reversal of 12660513020 is 2031506621.

It is a congruent number.

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, 18618062 + ... + 18618741.

It is an arithmetic number, because the mean of its divisors is an integer number (1172959326).

Almost surely, 2^12660513020 is an apocalyptic number.

12660513020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12660513020 is an abundant number, since it is smaller than the sum of its proper divisors (15490510804).

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

12660513020 is a wasteful number, since it uses less digits than its factorization.

12660513020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37236829 (or 37236827 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The spelling of 12660513020 in words is "twelve billion, six hundred sixty million, five hundred thirteen thousand, twenty".