12722044643 has 32 divisors (see below), whose sum is σ = 16756861440. Its totient is φ = 9357327360.

The previous prime is 12722044633. The next prime is 12722044651. The reversal of 12722044643 is 34644022721.

It is a cyclic number.

It is not a de Polignac number, because 12722044643 - 2¹² = 12722040547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12722044613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 389555 + ... + 420947.

It is an arithmetic number, because the mean of its divisors is an integer number (523651920).

Almost surely, 2^12722044643 is an apocalyptic number.

12722044643 is a deficient number, since it is larger than the sum of its proper divisors (4034816797).

12722044643 is a wasteful number, since it uses less digits than its factorization.

12722044643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31707.

The product of its (nonzero) digits is 64512, while the sum is 35.

The spelling of 12722044643 in words is "twelve billion, seven hundred twenty-two million, forty-four thousand, six hundred forty-three".