4257870544849 has 2 divisors, whose sum is σ = 4257870544850. Its totient is φ = 4257870544848.

The previous prime is 4257870544793. The next prime is 4257870544861. The reversal of 4257870544849 is 9484450787524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2249820003600 + 2008050541249 = 1499940^2 + 1417057^2 .

It is a cyclic number.

It is not a de Polignac number, because 4257870544849 - 2³³ = 4249280610257 is a prime.

It is not a weakly prime, because it can be changed into another prime (4257870524849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2128935272424 + 2128935272425.

It is an arithmetic number, because the mean of its divisors is an integer number (2128935272425).

Almost surely, 2^{4257870544849} is an apocalyptic number.

It is an amenable number.

4257870544849 is a deficient number, since it is larger than the sum of its proper divisors (1).

4257870544849 is an equidigital number, since it uses as much as digits as its factorization.

4257870544849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 361267200, while the sum is 67.

The spelling of 4257870544849 in words is "four trillion, two hundred fifty-seven billion, eight hundred seventy million, five hundred forty-four thousand, eight hundred forty-nine".