22706816537890 has 8 divisors (see below), whose sum is σ = 40872269768220. Its totient is φ = 9082726615152.

The previous prime is 22706816537861. The next prime is 22706816537891. The reversal of 22706816537890 is 9873561860722.

It is a Cunningham number, because it is equal to 4765167²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 22706816537889 + 1 = 4765167^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22706816537891) 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, 1135340826885 + ... + 1135340826904.

Almost surely, 2^{22706816537890} is an apocalyptic number.

22706816537890 is a deficient number, since it is larger than the sum of its proper divisors (18165453230330).

22706816537890 is a wasteful number, since it uses less digits than its factorization.

22706816537890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2270681653796.

The product of its (nonzero) digits is 60963840, while the sum is 64.

The spelling of 22706816537890 in words is "twenty-two trillion, seven hundred six billion, eight hundred sixteen million, five hundred thirty-seven thousand, eight hundred ninety".