12164145636868 has 24 divisors (see below), whose sum is σ = 21896939494584. Its totient is φ = 5909108275200.

The previous prime is 12164145636859. The next prime is 12164145636869. The reversal of 12164145636868 is 86863654146121.

It can be written as a sum of positive squares in 4 ways, for example, as 2282540812864 + 9881604824004 = 1510808^2 + 3143502^2 .

It is not an unprimeable number, because it can be changed into a prime (12164145636869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153843505 + ... + 153922552.

It is an arithmetic number, because the mean of its divisors is an integer number (912372478941).

Almost surely, 2^{12164145636868} is an apocalyptic number.

It is an amenable number.

12164145636868 is a deficient number, since it is larger than the sum of its proper divisors (9732793857716).

12164145636868 is a wasteful number, since it uses less digits than its factorization.

12164145636868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307766343 (or 307766341 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 61.

The spelling of 12164145636868 in words is "twelve trillion, one hundred sixty-four billion, one hundred forty-five million, six hundred thirty-six thousand, eight hundred sixty-eight".