43581420568413 has 64 divisors (see below), whose sum is σ = 80964032647680. Its totient is φ = 22554266102784.

The previous prime is 43581420568321. The next prime is 43581420568451. The reversal of 43581420568413 is 31486502418534.

43581420568413 is a `hidden beast` number, since 4 + 3 + 5 + 8 + 14 + 20 + 568 + 41 + 3 = 666.

It is not a de Polignac number, because 43581420568413 - 2¹⁷ = 43581420437341 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 43581420568413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43581420568913) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 167206156 + ... + 167466597.

It is an arithmetic number, because the mean of its divisors is an integer number (1265063010120).

Almost surely, 2^{43581420568413} is an apocalyptic number.

It is an amenable number.

43581420568413 is a deficient number, since it is larger than the sum of its proper divisors (37382612079267).

43581420568413 is a wasteful number, since it uses less digits than its factorization.

43581420568413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334672835 (or 334672829 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 54.

The spelling of 43581420568413 in words is "forty-three trillion, five hundred eighty-one billion, four hundred twenty million, five hundred sixty-eight thousand, four hundred thirteen".