43431663625452 has 120 divisors (see below), whose sum is σ = 116204605440000. Its totient is φ = 14137472420064.

The previous prime is 43431663625397. The next prime is 43431663625453. The reversal of 43431663625452 is 25452636613434.

43431663625452 is a `hidden beast` number, since 4 + 3 + 4 + 3 + 1 + 6 + 6 + 3 + 625 + 4 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (43431663625453) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 64294549 + ... + 64966547.

It is an arithmetic number, because the mean of its divisors is an integer number (968371712000).

Almost surely, 2^{43431663625452} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43431663625452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58102302720000).

43431663625452 is an abundant number, since it is smaller than the sum of its proper divisors (72772941814548).

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

43431663625452 is a wasteful number, since it uses less digits than its factorization.

43431663625452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676697 (or 676686 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 54.

The spelling of 43431663625452 in words is "forty-three trillion, four hundred thirty-one billion, six hundred sixty-three million, six hundred twenty-five thousand, four hundred fifty-two".