22644768247 has 4 divisors (see below), whose sum is σ = 23976813456. Its totient is φ = 21312723040.

The previous prime is 22644768241. The next prime is 22644768253. The reversal of 22644768247 is 74286744622.

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

It is an interprime number because it is at equal distance from previous prime (22644768241) and next prime (22644768253).

It is a cyclic number.

It is not a de Polignac number, because 22644768247 - 2¹⁵ = 22644735479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22644768194 and 22644768203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22644768241) 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, 666022579 + ... + 666022612.

It is an arithmetic number, because the mean of its divisors is an integer number (5994203364).

Almost surely, 2^22644768247 is an apocalyptic number.

22644768247 is a deficient number, since it is larger than the sum of its proper divisors (1332045209).

22644768247 is a wasteful number, since it uses less digits than its factorization.

22644768247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332045208.

The product of its digits is 7225344, while the sum is 52.

The spelling of 22644768247 in words is "twenty-two billion, six hundred forty-four million, seven hundred sixty-eight thousand, two hundred forty-seven".