21626133282 has 24 divisors (see below), whose sum is σ = 50460978204. Its totient is φ = 6654194784.

The previous prime is 21626133281. The next prime is 21626133329. The reversal of 21626133282 is 28233162612.

21626133282 is a `hidden beast` number, since 2 + 1 + 6 + 2 + 613 + 32 + 8 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20877071121 + 749062161 = 144489^2 + 27369^2 .

It is not an unprimeable number, because it can be changed into a prime (21626133281) 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, 46209453 + ... + 46209920.

Almost surely, 2^21626133282 is an apocalyptic number.

21626133282 is an abundant number, since it is smaller than the sum of its proper divisors (28834844922).

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

21626133282 is a wasteful number, since it uses less digits than its factorization.

21626133282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92419394 (or 92419391 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

Adding to 21626133282 its reverse (28233162612), we get a palindrome (49859295894).

The spelling of 21626133282 in words is "twenty-one billion, six hundred twenty-six million, one hundred thirty-three thousand, two hundred eighty-two".