2245781281943 has 2 divisors, whose sum is σ = 2245781281944. Its totient is φ = 2245781281942.

The previous prime is 2245781281883. The next prime is 2245781281957. The reversal of 2245781281943 is 3491821875422.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2245781281943 - 2¹⁸ = 2245781019799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2245781281963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1122890640971 + 1122890640972.

It is an arithmetic number, because the mean of its divisors is an integer number (1122890640972).

Almost surely, 2^{2245781281943} is an apocalyptic number.

2245781281943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2245781281943 is an equidigital number, since it uses as much as digits as its factorization.

2245781281943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7741440, while the sum is 56.

The spelling of 2245781281943 in words is "two trillion, two hundred forty-five billion, seven hundred eighty-one million, two hundred eighty-one thousand, nine hundred forty-three".