11943456171 has 8 divisors (see below), whose sum is σ = 15927057984. Its totient is φ = 7961079240.

The previous prime is 11943456163. The next prime is 11943456179. The reversal of 11943456171 is 17165434911.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11943456163) and next prime (11943456179).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11943456171 - 2³ = 11943456163 is a prime.

It is a super-2 number, since 2×11943456171² (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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283221 + ... + 322646.

It is an arithmetic number, because the mean of its divisors is an integer number (1990882248).

Almost surely, 2^11943456171 is an apocalyptic number.

11943456171 is a deficient number, since it is larger than the sum of its proper divisors (3983601813).

11943456171 is an equidigital number, since it uses as much as digits as its factorization.

11943456171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612441.

The product of its digits is 90720, while the sum is 42.

The spelling of 11943456171 in words is "eleven billion, nine hundred forty-three million, four hundred fifty-six thousand, one hundred seventy-one".