205960020143 has 2 divisors, whose sum is σ = 205960020144. Its totient is φ = 205960020142.

The previous prime is 205960020139. The next prime is 205960020179. The reversal of 205960020143 is 341020069502.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205960020143 - 2² = 205960020139 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205960020113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102980010071 + 102980010072.

It is an arithmetic number, because the mean of its divisors is an integer number (102980010072).

Almost surely, 2^205960020143 is an apocalyptic number.

205960020143 is a deficient number, since it is larger than the sum of its proper divisors (1).

205960020143 is an equidigital number, since it uses as much as digits as its factorization.

205960020143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 205960020143 its reverse (341020069502), we get a palindrome (546980089645).

The spelling of 205960020143 in words is "two hundred five billion, nine hundred sixty million, twenty thousand, one hundred forty-three".