12402443164 has 12 divisors (see below), whose sum is σ = 22028220424. Its totient is φ = 6108665904.

The previous prime is 12402443149. The next prime is 12402443171. The reversal of 12402443164 is 46134420421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23138619 + ... + 23139154.

Almost surely, 2^12402443164 is an apocalyptic number.

It is an amenable number.

12402443164 is a deficient number, since it is larger than the sum of its proper divisors (9625777260).

12402443164 is a wasteful number, since it uses less digits than its factorization.

12402443164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46277844 (or 46277842 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 12402443164 its reverse (46134420421), we get a palindrome (58536863585).

The spelling of 12402443164 in words is "twelve billion, four hundred two million, four hundred forty-three thousand, one hundred sixty-four".