12225776643 has 12 divisors (see below), whose sum is σ = 17992653120. Its totient is φ = 7996734096.

The previous prime is 12225776599. The next prime is 12225776699. The reversal of 12225776643 is 34667752221.

12225776643 is a `hidden beast` number, since 12 + 2 + 2 + 577 + 6 + 64 + 3 = 666.

It is not a de Polignac number, because 12225776643 - 2⁹ = 12225776131 is a prime.

It is a super-2 number, since 2×12225776643² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12225776243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12814803 + ... + 12815756.

It is an arithmetic number, because the mean of its divisors is an integer number (1499387760).

Almost surely, 2^12225776643 is an apocalyptic number.

12225776643 is a deficient number, since it is larger than the sum of its proper divisors (5766876477).

12225776643 is a wasteful number, since it uses less digits than its factorization.

12225776643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25630618 (or 25630615 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The spelling of 12225776643 in words is "twelve billion, two hundred twenty-five million, seven hundred seventy-six thousand, six hundred forty-three".