22656816001 has 4 divisors (see below), whose sum is σ = 22677470532. Its totient is φ = 22636161472.

The previous prime is 22656815963. The next prime is 22656816037. The reversal of 22656816001 is 10061865622.

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 9408806001 + 13248010000 = 96999^2 + 115100^2 .

It is a cyclic number.

It is not a de Polignac number, because 22656816001 - 2¹¹ = 22656813953 is a prime.

It is a super-2 number, since 2×22656816001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22656816601) 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, 10325620 + ... + 10327813.

It is an arithmetic number, because the mean of its divisors is an integer number (5669367633).

Almost surely, 2^22656816001 is an apocalyptic number.

It is an amenable number.

22656816001 is a deficient number, since it is larger than the sum of its proper divisors (20654531).

22656816001 is a wasteful number, since it uses less digits than its factorization.

22656816001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20654530.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 22656816001 in words is "twenty-two billion, six hundred fifty-six million, eight hundred sixteen thousand, one".