12045646172 has 12 divisors (see below), whose sum is σ = 24091292400. Its totient is φ = 5162419776.

The previous prime is 12045646169. The next prime is 12045646183. The reversal of 12045646172 is 27164654021.

It is a happy number.

12045646172 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

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, 215100797 + ... + 215100852.

It is an arithmetic number, because the mean of its divisors is an integer number (2007607700).

Almost surely, 2^12045646172 is an apocalyptic number.

It is an amenable number.

12045646172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12045646172 is a wasteful number, since it uses less digits than its factorization.

12045646172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430201660 (or 430201658 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 12045646172 in words is "twelve billion, forty-five million, six hundred forty-six thousand, one hundred seventy-two".