22173572943 has 6 divisors (see below), whose sum is σ = 32028494264. Its totient is φ = 14782381956.

The previous prime is 22173572933. The next prime is 22173572963. The reversal of 22173572943 is 34927537122.

22173572943 is a `hidden beast` number, since 2 + 2 + 1 + 7 + 357 + 294 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-22173572943 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 (22173572903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1231865155 + ... + 1231865172.

Almost surely, 2^22173572943 is an apocalyptic number.

22173572943 is a deficient number, since it is larger than the sum of its proper divisors (9854921321).

22173572943 is a wasteful number, since it uses less digits than its factorization.

22173572943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2463730333 (or 2463730330 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The spelling of 22173572943 in words is "twenty-two billion, one hundred seventy-three million, five hundred seventy-two thousand, nine hundred forty-three".