12013365456 has 60 divisors (see below), whose sum is σ = 34402633408. Its totient is φ = 3911326272.

The previous prime is 12013365389. The next prime is 12013365479. The reversal of 12013365456 is 65456331021.

12013365456 is a `hidden beast` number, since 12 + 0 + 133 + 65 + 456 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12013365456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 963880 + ... + 976263.

Almost surely, 2^12013365456 is an apocalyptic number.

12013365456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12013365456 is an abundant number, since it is smaller than the sum of its proper divisors (22389267952).

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

12013365456 is a wasteful number, since it uses less digits than its factorization.

12013365456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940200 (or 1940191 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 12013365456 its reverse (65456331021), we get a palindrome (77469696477).

The spelling of 12013365456 in words is "twelve billion, thirteen million, three hundred sixty-five thousand, four hundred fifty-six".