22644464002 has 4 divisors (see below), whose sum is σ = 33966696006. Its totient is φ = 11322232000.

The previous prime is 22644463993. The next prime is 22644464009. The reversal of 22644464002 is 20046444622.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19251285001 + 3393179001 = 138749^2 + 58251^2 .

It is not an unprimeable number, because it can be changed into a prime (22644464009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5661115999 + ... + 5661116002.

Almost surely, 2^22644464002 is an apocalyptic number.

22644464002 is a deficient number, since it is larger than the sum of its proper divisors (11322232004).

22644464002 is a wasteful number, since it uses less digits than its factorization.

22644464002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11322232003.

The product of its (nonzero) digits is 73728, while the sum is 34.

The spelling of 22644464002 in words is "twenty-two billion, six hundred forty-four million, four hundred sixty-four thousand, two".