12433797520 has 40 divisors (see below), whose sum is σ = 28918651320. Its totient is φ = 4971786240.

The previous prime is 12433797503. The next prime is 12433797521. The reversal of 12433797520 is 2579733421.

It can be written as a sum of positive squares in 4 ways, for example, as 8074100736 + 4359696784 = 89856^2 + 66028^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (12433797521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217726 + ... + 268834.

It is an arithmetic number, because the mean of its divisors is an integer number (722966283).

Almost surely, 2^12433797520 is an apocalyptic number.

12433797520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12433797520 is an abundant number, since it is smaller than the sum of its proper divisors (16484853800).

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

12433797520 is a wasteful number, since it uses less digits than its factorization.

12433797520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54163 (or 54157 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 43.

The spelling of 12433797520 in words is "twelve billion, four hundred thirty-three million, seven hundred ninety-seven thousand, five hundred twenty".