12117066669 has 16 divisors (see below), whose sum is σ = 18896011200. Its totient is φ = 7652883888.

The previous prime is 12117066667. The next prime is 12117066677. The reversal of 12117066669 is 96666071121.

It is not a de Polignac number, because 12117066669 - 2¹ = 12117066667 is a prime.

It is a super-2 number, since 2×12117066669² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12117066667) 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 in 15 ways as a sum of consecutive naturals, for example, 11809494 + ... + 11810519.

It is an arithmetic number, because the mean of its divisors is an integer number (1181000700).

Almost surely, 2^12117066669 is an apocalyptic number.

12117066669 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12117066669 is a deficient number, since it is larger than the sum of its proper divisors (6778944531).

12117066669 is a wasteful number, since it uses less digits than its factorization.

12117066669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23620041 (or 23620035 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 12117066669 in words is "twelve billion, one hundred seventeen million, sixty-six thousand, six hundred sixty-nine".