22181638675 has 36 divisors (see below), whose sum is σ = 33392488240. Its totient is φ = 14315512320.

The previous prime is 22181638637. The next prime is 22181638753. The reversal of 22181638675 is 57683618122.

It is a happy number.

It is not a de Polignac number, because 22181638675 - 2⁹ = 22181638163 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 168720 + ... + 269869.

Almost surely, 2^22181638675 is an apocalyptic number.

22181638675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22181638675 is a deficient number, since it is larger than the sum of its proper divisors (11210849565).

22181638675 is a wasteful number, since it uses less digits than its factorization.

22181638675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438640 (or 438618 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

The spelling of 22181638675 in words is "twenty-two billion, one hundred eighty-one million, six hundred thirty-eight thousand, six hundred seventy-five".