22818821481 has 27 divisors (see below), whose sum is σ = 33773711517. Its totient is φ = 14846078520.

The previous prime is 22818821447. The next prime is 22818821483. The reversal of 22818821481 is 18412881822.

The square root of 22818821481 is 151059.

It is a perfect power (a square), and thus also a powerful number.

22818821481 is a `hidden beast` number, since 2 + 281 + 88 + 214 + 81 = 666.

It is not a de Polignac number, because 22818821481 - 2¹⁷ = 22818690409 is a prime.

It is a super-2 number, since 2×22818821481² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22818821483) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 19486026 + ... + 19487196.

Almost surely, 2^22818821481 is an apocalyptic number.

22818821481 is the 151059-th square number.

22818821481 is the 75530-th centered octagonal number.

It is an amenable number.

22818821481 is a deficient number, since it is larger than the sum of its proper divisors (10954890036).

22818821481 is an frugal number, since it uses more digits than its factorization.

22818821481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434 (or 1217 counting only the distinct ones).

The product of its digits is 131072, while the sum is 45.

The spelling of 22818821481 in words is "twenty-two billion, eight hundred eighteen million, eight hundred twenty-one thousand, four hundred eighty-one".