12689168955 has 16 divisors (see below), whose sum is σ = 20304476160. Its totient is φ = 6766954848.

The previous prime is 12689168929. The next prime is 12689168957. The reversal of 12689168955 is 55986198621.

It is not a de Polignac number, because 12689168955 - 2⁷ = 12689168827 is a prime.

It is a super-2 number, since 2×12689168955² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12689168957) 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, 175644 + ... + 237126.

It is an arithmetic number, because the mean of its divisors is an integer number (1269029760).

Almost surely, 2^12689168955 is an apocalyptic number.

12689168955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12689168955 is a deficient number, since it is larger than the sum of its proper divisors (7615307205).

12689168955 is a wasteful number, since it uses less digits than its factorization.

12689168955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75250.

The product of its digits is 9331200, while the sum is 60.

The spelling of 12689168955 in words is "twelve billion, six hundred eighty-nine million, one hundred sixty-eight thousand, nine hundred fifty-five".