43043365645138 has 8 divisors (see below), whose sum is σ = 64571037281100. Its totient is φ = 21519686551440.

The previous prime is 43043365645097. The next prime is 43043365645249. The reversal of 43043365645138 is 83154656334034.

It can be written as a sum of positive squares in 2 ways, for example, as 41355021439369 + 1688344205769 = 6430787^2 + 1299363^2 .

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

It is a super-2 number, since 2×43043365645138² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998108613 + ... + 998151736.

Almost surely, 2^{43043365645138} is an apocalyptic number.

43043365645138 is a deficient number, since it is larger than the sum of its proper divisors (21527671635962).

43043365645138 is a wasteful number, since it uses less digits than its factorization.

43043365645138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996271132.

The product of its (nonzero) digits is 37324800, while the sum is 55.

The spelling of 43043365645138 in words is "forty-three trillion, forty-three billion, three hundred sixty-five million, six hundred forty-five thousand, one hundred thirty-eight".