2243241544981 has 2 divisors, whose sum is σ = 2243241544982. Its totient is φ = 2243241544980.

The previous prime is 2243241544979. The next prime is 2243241545029. The reversal of 2243241544981 is 1894451423422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2227359244356 + 15882300625 = 1492434^2 + 126025^2 .

It is a cyclic number.

It is not a de Polignac number, because 2243241544981 - 2¹ = 2243241544979 is a prime.

It is a super-2 number, since 2×2243241544981² (a number of 26 digits) contains 22 as substring.

Together with 2243241544979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2243241544381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121620772490 + 1121620772491.

It is an arithmetic number, because the mean of its divisors is an integer number (1121620772491).

Almost surely, 2^{2243241544981} is an apocalyptic number.

It is an amenable number.

2243241544981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243241544981 is an equidigital number, since it uses as much as digits as its factorization.

2243241544981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2211840, while the sum is 49.

The spelling of 2243241544981 in words is "two trillion, two hundred forty-three billion, two hundred forty-one million, five hundred forty-four thousand, nine hundred eighty-one".