43581385913 has 8 divisors (see below), whose sum is σ = 47303359488. Its totient is φ = 39912206544.

The previous prime is 43581385909. The next prime is 43581385921. The reversal of 43581385913 is 31958318534.

43581385913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43581385913 - 2² = 43581385909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43581385943) 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, 13196831 + ... + 13200132.

It is an arithmetic number, because the mean of its divisors is an integer number (5912919936).

Almost surely, 2^43581385913 is an apocalyptic number.

It is an amenable number.

43581385913 is a deficient number, since it is larger than the sum of its proper divisors (3721973575).

43581385913 is a wasteful number, since it uses less digits than its factorization.

43581385913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26397103.

The product of its digits is 1555200, while the sum is 50.

The spelling of 43581385913 in words is "forty-three billion, five hundred eighty-one million, three hundred eighty-five thousand, nine hundred thirteen".