43194471872 has 28 divisors (see below), whose sum is σ = 85720930920. Its totient is φ = 21595497216.

The previous prime is 43194471851. The next prime is 43194471877. The reversal of 43194471872 is 27817449134.

It is a self number, because there is not a number n which added to its sum of digits gives 43194471872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43194471877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1212458 + ... + 1247574.

Almost surely, 2^43194471872 is an apocalyptic number.

It is an amenable number.

43194471872 is a deficient number, since it is larger than the sum of its proper divisors (42526459048).

43194471872 is a wasteful number, since it uses less digits than its factorization.

43194471872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54348 (or 54338 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 50.

The spelling of 43194471872 in words is "forty-three billion, one hundred ninety-four million, four hundred seventy-one thousand, eight hundred seventy-two".