43185742113938 has 18 divisors (see below), whose sum is σ = 65141020705887. Its totient is φ = 21472737000480.

The previous prime is 43185742113929. The next prime is 43185742113973. The reversal of 43185742113938 is 83931124758134.

It can be written as a sum of positive squares in 5 ways, for example, as 9508878820609 + 33676863293329 = 3083647^2 + 5803177^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=4646813.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1682133470 + ... + 1682159142.

Almost surely, 2^{43185742113938} is an apocalyptic number.

43185742113938 is a deficient number, since it is larger than the sum of its proper divisors (21955278591949).

43185742113938 is an frugal number, since it uses more digits than its factorization.

43185742113938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51710 (or 25856 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 59.

The spelling of 43185742113938 in words is "forty-three trillion, one hundred eighty-five billion, seven hundred forty-two million, one hundred thirteen thousand, nine hundred thirty-eight".