281449950814289 has 2 divisors, whose sum is σ = 281449950814290. Its totient is φ = 281449950814288.

The previous prime is 281449950814273. The next prime is 281449950814301. The reversal of 281449950814289 is 982418059944182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 279269553049600 + 2180397764689 = 16711360^2 + 1476617^2 .

It is a cyclic number.

It is not a de Polignac number, because 281449950814289 - 2⁴ = 281449950814273 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (281449950814189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140724975407144 + 140724975407145.

It is an arithmetic number, because the mean of its divisors is an integer number (140724975407145).

Almost surely, 2^{281449950814289} is an apocalyptic number.

It is an amenable number.

281449950814289 is a deficient number, since it is larger than the sum of its proper divisors (1).

281449950814289 is an equidigital number, since it uses as much as digits as its factorization.

281449950814289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 477757440, while the sum is 74.

The spelling of 281449950814289 in words is "two hundred eighty-one trillion, four hundred forty-nine billion, nine hundred fifty million, eight hundred fourteen thousand, two hundred eighty-nine".