11943456172 has 6 divisors (see below), whose sum is σ = 20901048308. Its totient is φ = 5971728084.

The previous prime is 11943456163. The next prime is 11943456179. The reversal of 11943456172 is 27165434911.

It is a happy number.

It is a super-2 number, since 2×11943456172² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11943456179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1492932018 + ... + 1492932025.

Almost surely, 2^11943456172 is an apocalyptic number.

It is an amenable number.

11943456172 is a deficient number, since it is larger than the sum of its proper divisors (8957592136).

11943456172 is a wasteful number, since it uses less digits than its factorization.

11943456172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2985864047 (or 2985864045 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The spelling of 11943456172 in words is "eleven billion, nine hundred forty-three million, four hundred fifty-six thousand, one hundred seventy-two".