43091993223 has 16 divisors (see below), whose sum is σ = 63927113440. Its totient is φ = 28688789952.

The previous prime is 43091993173. The next prime is 43091993237. The reversal of 43091993223 is 32239919034.

43091993223 is a `hidden beast` number, since 4 + 309 + 19 + 9 + 322 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-43091993223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43091993123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1068886 + ... + 1108467.

It is an arithmetic number, because the mean of its divisors is an integer number (3995444590).

Almost surely, 2^43091993223 is an apocalyptic number.

43091993223 is a deficient number, since it is larger than the sum of its proper divisors (20835120217).

43091993223 is a wasteful number, since it uses less digits than its factorization.

43091993223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178095 (or 2178089 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 45.

The spelling of 43091993223 in words is "forty-three billion, ninety-one million, nine hundred ninety-three thousand, two hundred twenty-three".