22645289287 has 4 divisors (see below), whose sum is σ = 22645610680. Its totient is φ = 22644967896.

The previous prime is 22645289273. The next prime is 22645289291. The reversal of 22645289287 is 78298254622.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22645289287 - 2¹⁵ = 22645256519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22645289237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4212 + ... + 212857.

It is an arithmetic number, because the mean of its divisors is an integer number (5661402670).

Almost surely, 2^22645289287 is an apocalyptic number.

22645289287 is a deficient number, since it is larger than the sum of its proper divisors (321393).

22645289287 is a wasteful number, since it uses less digits than its factorization.

22645289287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321392.

The product of its digits is 7741440, while the sum is 55.

The spelling of 22645289287 in words is "twenty-two billion, six hundred forty-five million, two hundred eighty-nine thousand, two hundred eighty-seven".