43885901313 has 12 divisors (see below), whose sum is σ = 63452846548. Its totient is φ = 29228605920.

The previous prime is 43885901309. The next prime is 43885901329. The reversal of 43885901313 is 31310958834.

43885901313 is a `hidden beast` number, since 4 + 38 + 8 + 590 + 13 + 13 = 666.

43885901313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12492085824 + 31393815489 = 111768^2 + 177183^2 .

It is not a de Polignac number, because 43885901313 - 2² = 43885901309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43885909313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2378770 + ... + 2397147.

Almost surely, 2^43885901313 is an apocalyptic number.

It is an amenable number.

43885901313 is a deficient number, since it is larger than the sum of its proper divisors (19566945235).

43885901313 is a wasteful number, since it uses less digits than its factorization.

43885901313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4776944 (or 4776941 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 43885901313 in words is "forty-three billion, eight hundred eighty-five million, nine hundred one thousand, three hundred thirteen".