22644400063 has 4 divisors (see below), whose sum is σ = 22645079280. Its totient is φ = 22643720848.

The previous prime is 22644400057. The next prime is 22644400087. The reversal of 22644400063 is 36000444622.

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

It is a cyclic number.

It is not a de Polignac number, because 22644400063 - 2²⁹ = 22107529151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22644399998 and 22644400034.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22644400033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286870 + ... + 357187.

It is an arithmetic number, because the mean of its divisors is an integer number (5661269820).

Almost surely, 2^22644400063 is an apocalyptic number.

22644400063 is a deficient number, since it is larger than the sum of its proper divisors (679217).

22644400063 is an equidigital number, since it uses as much as digits as its factorization.

22644400063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679216.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 22644400063 its reverse (36000444622), we get a palindrome (58644844685).

The spelling of 22644400063 in words is "twenty-two billion, six hundred forty-four million, four hundred thousand, sixty-three".