206743053757 has 2 divisors, whose sum is σ = 206743053758. Its totient is φ = 206743053756.

The previous prime is 206743053697. The next prime is 206743053773. The reversal of 206743053757 is 757350347602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173006915481 + 33736138276 = 415941^2 + 183674^2 .

It is a cyclic number.

It is not a de Polignac number, because 206743053757 - 2²³ = 206734665149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206743053757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206743050757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103371526878 + 103371526879.

It is an arithmetic number, because the mean of its divisors is an integer number (103371526879).

Almost surely, 2^206743053757 is an apocalyptic number.

It is an amenable number.

206743053757 is a deficient number, since it is larger than the sum of its proper divisors (1).

206743053757 is an equidigital number, since it uses as much as digits as its factorization.

206743053757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3704400, while the sum is 49.

The spelling of 206743053757 in words is "two hundred six billion, seven hundred forty-three million, fifty-three thousand, seven hundred fifty-seven".