205352613161143 has 4 divisors (see below), whose sum is σ = 234688700755600. Its totient is φ = 176016525566688.

The previous prime is 205352613161119. The next prime is 205352613161161. The reversal of 205352613161143 is 341161316253502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205352613161143 - 2²¹ = 205352611063991 is a prime.

It is a super-2 number, since 2×205352613161143² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 205352613161143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205352613161543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14668043797218 + ... + 14668043797231.

It is an arithmetic number, because the mean of its divisors is an integer number (58672175188900).

Almost surely, 2^{205352613161143} is an apocalyptic number.

205352613161143 is a deficient number, since it is larger than the sum of its proper divisors (29336087594457).

205352613161143 is an equidigital number, since it uses as much as digits as its factorization.

205352613161143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29336087594456.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 205352613161143 in words is "two hundred five trillion, three hundred fifty-two billion, six hundred thirteen million, one hundred sixty-one thousand, one hundred forty-three".