22621062409 has 21 divisors (see below), whose sum is σ = 25105321111. Its totient is φ = 20382614560.

The previous prime is 22621062407. The next prime is 22621062467. The reversal of 22621062409 is 90426012622.

The square root of 22621062409 is 150403.

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

It can be written as a sum of positive squares in only one way, i.e., 398601225 + 22222461184 = 19965^2 + 149072^2 .

It is not a de Polignac number, because 22621062409 - 2¹ = 22621062407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22621062403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 200186337 + ... + 200186449.

Almost surely, 2^22621062409 is an apocalyptic number.

22621062409 is the 150403-rd square number.

22621062409 is the 75202-nd centered octagonal number.

It is an amenable number.

22621062409 is a deficient number, since it is larger than the sum of its proper divisors (2484258702).

22621062409 is an frugal number, since it uses more digits than its factorization.

22621062409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

Multiplying 22621062409 by its product of nonzero digits (20736), we get a square (469070350113024 = 21658032²).

The spelling of 22621062409 in words is "twenty-two billion, six hundred twenty-one million, sixty-two thousand, four hundred nine".