43994553242 has 16 divisors (see below), whose sum is σ = 66448701000. Its totient is φ = 21845048640.

The previous prime is 43994553209. The next prime is 43994553299. The reversal of 43994553242 is 24235549934.

It can be written as a sum of positive squares in 4 ways, for example, as 39187765681 + 4806787561 = 197959^2 + 69331^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1733984 + ... + 1759172.

Almost surely, 2^43994553242 is an apocalyptic number.

43994553242 is a deficient number, since it is larger than the sum of its proper divisors (22454147758).

43994553242 is a wasteful number, since it uses less digits than its factorization.

43994553242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31201.

The product of its digits is 4665600, while the sum is 50.

The spelling of 43994553242 in words is "forty-three billion, nine hundred ninety-four million, five hundred fifty-three thousand, two hundred forty-two".