254442043431449 has 2 divisors, whose sum is σ = 254442043431450. Its totient is φ = 254442043431448.

The previous prime is 254442043431397. The next prime is 254442043431469. The reversal of 254442043431449 is 944134340244452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165643592467600 + 88798450963849 = 12870260^2 + 9423293^2 .

It is a cyclic number.

It is not a de Polignac number, because 254442043431449 - 2³² = 254437748464153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 254442043431449.

It is not a weakly prime, because it can be changed into another prime (254442043431469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127221021715724 + 127221021715725.

It is an arithmetic number, because the mean of its divisors is an integer number (127221021715725).

Almost surely, 2^{254442043431449} is an apocalyptic number.

It is an amenable number.

254442043431449 is a deficient number, since it is larger than the sum of its proper divisors (1).

254442043431449 is an equidigital number, since it uses as much as digits as its factorization.

254442043431449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26542080, while the sum is 53.

The spelling of 254442043431449 in words is "two hundred fifty-four trillion, four hundred forty-two billion, forty-three million, four hundred thirty-one thousand, four hundred forty-nine".