2143165304257 has 2 divisors, whose sum is σ = 2143165304258. Its totient is φ = 2143165304256.

The previous prime is 2143165304197. The next prime is 2143165304261. The reversal of 2143165304257 is 7524035613412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2141820542016 + 1344762241 = 1463496^2 + 36671^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143165304257 - 2⁷ = 2143165304129 is a prime.

It is not a weakly prime, because it can be changed into another prime (2143165304297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071582652128 + 1071582652129.

It is an arithmetic number, because the mean of its divisors is an integer number (1071582652129).

Almost surely, 2^{2143165304257} is an apocalyptic number.

It is an amenable number.

2143165304257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143165304257 is an equidigital number, since it uses as much as digits as its factorization.

2143165304257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 2143165304257 in words is "two trillion, one hundred forty-three billion, one hundred sixty-five million, three hundred four thousand, two hundred fifty-seven".