12117161475 has 36 divisors (see below), whose sum is σ = 21779986696. Its totient is φ = 6439616640.

The previous prime is 12117161467. The next prime is 12117161477. The reversal of 12117161475 is 57416171121.

12117161475 is a `hidden beast` number, since 1 + 21 + 1 + 7 + 161 + 475 = 666.

It is not a de Polignac number, because 12117161475 - 2³ = 12117161467 is a prime.

It is a super-2 number, since 2×12117161475² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12117161477) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 31474 + ... + 158823.

Almost surely, 2^12117161475 is an apocalyptic number.

12117161475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12117161475 is a deficient number, since it is larger than the sum of its proper divisors (9662825221).

12117161475 is a wasteful number, since it uses less digits than its factorization.

12117161475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190596 (or 190588 counting only the distinct ones).

The product of its digits is 11760, while the sum is 36.

The spelling of 12117161475 in words is "twelve billion, one hundred seventeen million, one hundred sixty-one thousand, four hundred seventy-five".