22288163645 has 16 divisors (see below), whose sum is σ = 29505072960. Its totient is φ = 16027440000.

The previous prime is 22288163621. The next prime is 22288163671. The reversal of 22288163645 is 54636188222.

It is a happy number.

It is not a de Polignac number, because 22288163645 - 2¹² = 22288159549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22288163645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2271731 + ... + 2281520.

It is an arithmetic number, because the mean of its divisors is an integer number (1844067060).

Almost surely, 2^22288163645 is an apocalyptic number.

It is an amenable number.

22288163645 is a deficient number, since it is larger than the sum of its proper divisors (7216909315).

22288163645 is a wasteful number, since it uses less digits than its factorization.

22288163645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4553356.

The product of its digits is 1105920, while the sum is 47.

The spelling of 22288163645 in words is "twenty-two billion, two hundred eighty-eight million, one hundred sixty-three thousand, six hundred forty-five".