12400634175066 has 12 divisors (see below), whose sum is σ = 26868040712682. Its totient is φ = 4133544725016.

The previous prime is 12400634175047. The next prime is 12400634175067. The reversal of 12400634175066 is 66057143600421.

12400634175066 is a `hidden beast` number, since 1 + 2 + 4 + 0 + 0 + 634 + 1 + 7 + 5 + 0 + 6 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10120319750025 + 2280314425041 = 3181245^2 + 1510071^2 .

It is a super-2 number, since 2×12400634175066² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12400634175067) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 344462060401 + ... + 344462060436.

Almost surely, 2^{12400634175066} is an apocalyptic number.

12400634175066 is an abundant number, since it is smaller than the sum of its proper divisors (14467406537616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12400634175066 is a wasteful number, since it uses less digits than its factorization.

12400634175066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688924120845 (or 688924120842 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

Adding to 12400634175066 its reverse (66057143600421), we get a palindrome (78457777775487).

The spelling of 12400634175066 in words is "twelve trillion, four hundred billion, six hundred thirty-four million, one hundred seventy-five thousand, sixty-six".