206021536214573 has 2 divisors, whose sum is σ = 206021536214574. Its totient is φ = 206021536214572.

The previous prime is 206021536214567. The next prime is 206021536214621. The reversal of 206021536214573 is 375412635120602.

It is a happy number.

206021536214573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184918739901289 + 21102796313284 = 13598483^2 + 4593778^2 .

It is a cyclic number.

It is not a de Polignac number, because 206021536214573 - 2³⁸ = 205746658307629 is a prime.

It is a super-2 number, since 2×206021536214573² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206021536211573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103010768107286 + 103010768107287.

It is an arithmetic number, because the mean of its divisors is an integer number (103010768107287).

Almost surely, 2^{206021536214573} is an apocalyptic number.

It is an amenable number.

206021536214573 is a deficient number, since it is larger than the sum of its proper divisors (1).

206021536214573 is an equidigital number, since it uses as much as digits as its factorization.

206021536214573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 206021536214573 in words is "two hundred six trillion, twenty-one billion, five hundred thirty-six million, two hundred fourteen thousand, five hundred seventy-three".