206801144449 has 2 divisors, whose sum is σ = 206801144450. Its totient is φ = 206801144448.

The previous prime is 206801144447. The next prime is 206801144467. The reversal of 206801144449 is 944441108602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160256102400 + 46545042049 = 400320^2 + 215743^2 .

It is a cyclic number.

It is not a de Polignac number, because 206801144449 - 2¹ = 206801144447 is a prime.

Together with 206801144447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (206801144447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103400572224 + 103400572225.

It is an arithmetic number, because the mean of its divisors is an integer number (103400572225).

Almost surely, 2^206801144449 is an apocalyptic number.

It is an amenable number.

206801144449 is a deficient number, since it is larger than the sum of its proper divisors (1).

206801144449 is an equidigital number, since it uses as much as digits as its factorization.

206801144449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 206801144449 in words is "two hundred six billion, eight hundred one million, one hundred forty-four thousand, four hundred forty-nine".