206505515159 has 2 divisors, whose sum is σ = 206505515160. Its totient is φ = 206505515158.

The previous prime is 206505515113. The next prime is 206505515173. The reversal of 206505515159 is 951515505602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 206505515159 - 2²⁰ = 206504466583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206505515179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103252757579 + 103252757580.

It is an arithmetic number, because the mean of its divisors is an integer number (103252757580).

Almost surely, 2^206505515159 is an apocalyptic number.

206505515159 is a deficient number, since it is larger than the sum of its proper divisors (1).

206505515159 is an equidigital number, since it uses as much as digits as its factorization.

206505515159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 337500, while the sum is 44.

The spelling of 206505515159 in words is "two hundred six billion, five hundred five million, five hundred fifteen thousand, one hundred fifty-nine".