22638218775 has 12 divisors (see below), whose sum is σ = 37428521832. Its totient is φ = 12073716640.

The previous prime is 22638218773. The next prime is 22638218789. The reversal of 22638218775 is 57781283622.

It is not a de Polignac number, because 22638218775 - 2¹ = 22638218773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22638218773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150921384 + ... + 150921533.

It is an arithmetic number, because the mean of its divisors is an integer number (3119043486).

Almost surely, 2^22638218775 is an apocalyptic number.

22638218775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22638218775 is a deficient number, since it is larger than the sum of its proper divisors (14790303057).

22638218775 is a wasteful number, since it uses less digits than its factorization.

22638218775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301842930 (or 301842925 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 51.

The spelling of 22638218775 in words is "twenty-two billion, six hundred thirty-eight million, two hundred eighteen thousand, seven hundred seventy-five".