12133965720 has 32 divisors (see below), whose sum is σ = 36401897520. Its totient is φ = 3235724160.

The previous prime is 12133965671. The next prime is 12133965733. The reversal of 12133965720 is 2756933121.

It is a happy number.

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, 50558071 + ... + 50558310.

Almost surely, 2^12133965720 is an apocalyptic number.

12133965720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12133965720 is an abundant number, since it is smaller than the sum of its proper divisors (24267931800).

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

12133965720 is a wasteful number, since it uses less digits than its factorization.

12133965720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101116395 (or 101116391 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 39.

The spelling of 12133965720 in words is "twelve billion, one hundred thirty-three million, nine hundred sixty-five thousand, seven hundred twenty".