206743346700353 has 4 divisors (see below), whose sum is σ = 206745881861508. Its totient is φ = 206740811539200.

The previous prime is 206743346700337. The next prime is 206743346700361. The reversal of 206743346700353 is 353007643347602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 93485925491344 + 113257421209009 = 9668812^2 + 10642247^2 .

It is a cyclic number.

It is not a de Polignac number, because 206743346700353 - 2⁴ = 206743346700337 is a prime.

It is a super-2 number, since 2×206743346700353² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206743346700295 and 206743346700304.

It is not an unprimeable number, because it can be changed into a prime (206743346730353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1267458248 + ... + 1267621353.

It is an arithmetic number, because the mean of its divisors is an integer number (51686470465377).

Almost surely, 2^{206743346700353} is an apocalyptic number.

It is an amenable number.

206743346700353 is a deficient number, since it is larger than the sum of its proper divisors (2535161155).

206743346700353 is an equidigital number, since it uses as much as digits as its factorization.

206743346700353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2535161154.

The product of its (nonzero) digits is 22861440, while the sum is 53.

The spelling of 206743346700353 in words is "two hundred six trillion, seven hundred forty-three billion, three hundred forty-six million, seven hundred thousand, three hundred fifty-three".