43431921255316 has 24 divisors (see below), whose sum is σ = 83074024291104. Its totient is φ = 19704035184480.

The previous prime is 43431921255299. The next prime is 43431921255319. The reversal of 43431921255316 is 61355212913434.

It is a self number, because there is not a number n which added to its sum of digits gives 43431921255316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43431921255319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 943656835 + ... + 943702858.

It is an arithmetic number, because the mean of its divisors is an integer number (3461417678796).

Almost surely, 2^{43431921255316} is an apocalyptic number.

It is an amenable number.

43431921255316 is a deficient number, since it is larger than the sum of its proper divisors (39642103035788).

43431921255316 is a wasteful number, since it uses less digits than its factorization.

43431921255316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887360231 (or 1887360229 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 49.

The spelling of 43431921255316 in words is "forty-three trillion, four hundred thirty-one billion, nine hundred twenty-one million, two hundred fifty-five thousand, three hundred sixteen".