12664222644 has 24 divisors (see below), whose sum is σ = 29583342880. Its totient is φ = 4216623264.

The previous prime is 12664222633. The next prime is 12664222651. The reversal of 12664222644 is 44622246621.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586999 + ... + 608190.

Almost surely, 2^12664222644 is an apocalyptic number.

It is an amenable number.

12664222644 is an abundant number, since it is smaller than the sum of its proper divisors (16919120236).

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

12664222644 is a wasteful number, since it uses less digits than its factorization.

12664222644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196079 (or 1196077 counting only the distinct ones).

The product of its digits is 221184, while the sum is 39.

The spelling of 12664222644 in words is "twelve billion, six hundred sixty-four million, two hundred twenty-two thousand, six hundred forty-four".