13644866907 has 160 divisors (see below), whose sum is σ = 24916598784. Its totient is φ = 7278336000.

The previous prime is 13644866903. The next prime is 13644866971. The reversal of 13644866907 is 70966844631.

13644866907 is a `hidden beast` number, since 13 + 64 + 486 + 6 + 90 + 7 = 666.

13644866907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13644866907 - 2² = 13644866903 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13644866903) 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 159 ways as a sum of consecutive naturals, for example, 90363282 + ... + 90363432.

Almost surely, 2^13644866907 is an apocalyptic number.

13644866907 is a deficient number, since it is larger than the sum of its proper divisors (11271731877).

13644866907 is a wasteful number, since it uses less digits than its factorization.

13644866907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 13644866907 in words is "thirteen billion, six hundred forty-four million, eight hundred sixty-six thousand, nine hundred seven".