206604645311 has 2 divisors, whose sum is σ = 206604645312. Its totient is φ = 206604645310.

The previous prime is 206604645271. The next prime is 206604645323. The reversal of 206604645311 is 113546406602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 206604645311 - 2³⁴ = 189424776127 is a prime.

It is a super-2 number, since 2×206604645311² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206604645211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103302322655 + 103302322656.

It is an arithmetic number, because the mean of its divisors is an integer number (103302322656).

Almost surely, 2^206604645311 is an apocalyptic number.

206604645311 is a deficient number, since it is larger than the sum of its proper divisors (1).

206604645311 is an equidigital number, since it uses as much as digits as its factorization.

206604645311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 206604645311 in words is "two hundred six billion, six hundred four million, six hundred forty-five thousand, three hundred eleven".