12665512768149 has 32 divisors (see below), whose sum is σ = 19342043965440. Its totient is φ = 8186788572336.

The previous prime is 12665512768121. The next prime is 12665512768159. The reversal of 12665512768149 is 94186721556621.

It is a happy number.

12665512768149 is a `hidden beast` number, since 1 + 2 + 6 + 6 + 5 + 512 + 76 + 8 + 1 + 49 = 666.

It is not a de Polignac number, because 12665512768149 - 2¹³ = 12665512759957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12665512768159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46503019 + ... + 46774584.

It is an arithmetic number, because the mean of its divisors is an integer number (604438873920).

Almost surely, 2^{12665512768149} is an apocalyptic number.

It is an amenable number.

12665512768149 is a deficient number, since it is larger than the sum of its proper divisors (6676531197291).

12665512768149 is a wasteful number, since it uses less digits than its factorization.

12665512768149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93277766 (or 93277760 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 63.

The spelling of 12665512768149 in words is "twelve trillion, six hundred sixty-five billion, five hundred twelve million, seven hundred sixty-eight thousand, one hundred forty-nine".