22688281668 has 48 divisors (see below), whose sum is σ = 60365208960. Its totient is φ = 6570361344.

The previous prime is 22688281541. The next prime is 22688281687. The reversal of 22688281668 is 86618288622.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

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, 4274928 + ... + 4280231.

It is an arithmetic number, because the mean of its divisors is an integer number (1257608520).

Almost surely, 2^22688281668 is an apocalyptic number.

It is an amenable number.

22688281668 is an abundant number, since it is smaller than the sum of its proper divisors (37676927292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22688281668 is a wasteful number, since it uses less digits than its factorization.

22688281668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8555196 (or 8555194 counting only the distinct ones).

The product of its digits is 7077888, while the sum is 57.

The spelling of 22688281668 in words is "twenty-two billion, six hundred eighty-eight million, two hundred eighty-one thousand, six hundred sixty-eight".