22011662489 has 4 divisors (see below), whose sum is σ = 22606572324. Its totient is φ = 21416752656.

The previous prime is 22011662471. The next prime is 22011662531. The reversal of 22011662489 is 98426611022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19233529225 + 2778133264 = 138685^2 + 52708^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22011662489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22011652489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297454862 + ... + 297454935.

It is an arithmetic number, because the mean of its divisors is an integer number (5651643081).

Almost surely, 2^22011662489 is an apocalyptic number.

It is an amenable number.

22011662489 is a deficient number, since it is larger than the sum of its proper divisors (594909835).

22011662489 is an equidigital number, since it uses as much as digits as its factorization.

22011662489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594909834.

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 22011662489 in words is "twenty-two billion, eleven million, six hundred sixty-two thousand, four hundred eighty-nine".