205299142943 has 2 divisors, whose sum is σ = 205299142944. Its totient is φ = 205299142942.

The previous prime is 205299142903. The next prime is 205299142967. The reversal of 205299142943 is 349241992502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205299142943 - 2⁶ = 205299142879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205299142891 and 205299142900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205299142903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102649571471 + 102649571472.

It is an arithmetic number, because the mean of its divisors is an integer number (102649571472).

Almost surely, 2^205299142943 is an apocalyptic number.

205299142943 is a deficient number, since it is larger than the sum of its proper divisors (1).

205299142943 is an equidigital number, since it uses as much as digits as its factorization.

205299142943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 205299142943 in words is "two hundred five billion, two hundred ninety-nine million, one hundred forty-two thousand, nine hundred forty-three".