22905689643 has 12 divisors (see below), whose sum is σ = 34226892960. Its totient is φ = 14743892016.

The previous prime is 22905689591. The next prime is 22905689671. The reversal of 22905689643 is 34698650922.

It is a happy number.

It is not a de Polignac number, because 22905689643 - 2¹⁸ = 22905427499 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 22905689643.

It is not an unprimeable number, because it can be changed into a prime (22905689693) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43880371 + ... + 43880892.

It is an arithmetic number, because the mean of its divisors is an integer number (2852241080).

Almost surely, 2^22905689643 is an apocalyptic number.

22905689643 is a deficient number, since it is larger than the sum of its proper divisors (11321203317).

22905689643 is a wasteful number, since it uses less digits than its factorization.

22905689643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87761298 (or 87761295 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 22905689643 in words is "twenty-two billion, nine hundred five million, six hundred eighty-nine thousand, six hundred forty-three".