2250110665681 has 2 divisors, whose sum is σ = 2250110665682. Its totient is φ = 2250110665680.

The previous prime is 2250110665667. The next prime is 2250110665771. The reversal of 2250110665681 is 1865660110522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1997725001281 + 252385664400 = 1413409^2 + 502380^2 .

It is a cyclic number.

It is not a de Polignac number, because 2250110665681 - 2⁷ = 2250110665553 is a prime.

It is a super-2 number, since 2×2250110665681² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2250110665081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125055332840 + 1125055332841.

It is an arithmetic number, because the mean of its divisors is an integer number (1125055332841).

Almost surely, 2^{2250110665681} is an apocalyptic number.

It is an amenable number.

2250110665681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2250110665681 is an equidigital number, since it uses as much as digits as its factorization.

2250110665681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 2250110665681 in words is "two trillion, two hundred fifty billion, one hundred ten million, six hundred sixty-five thousand, six hundred eighty-one".