2163441326656 has 28 divisors (see below), whose sum is σ = 4392917931952. Its totient is φ = 1056564367488.

The previous prime is 2163441326587. The next prime is 2163441326723. The reversal of 2163441326656 is 6566231443612.

It is a super-2 number, since 2×2163441326656² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393064350 + ... + 393069853.

Almost surely, 2^{2163441326656} is an apocalyptic number.

It is an amenable number.

2163441326656 is an abundant number, since it is smaller than the sum of its proper divisors (2229476605296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2163441326656 is an equidigital number, since it uses as much as digits as its factorization.

2163441326656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786134258 (or 786134248 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 49.

The spelling of 2163441326656 in words is "two trillion, one hundred sixty-three billion, four hundred forty-one million, three hundred twenty-six thousand, six hundred fifty-six".