205900316143 has 4 divisors (see below), whose sum is σ = 206493689160. Its totient is φ = 205306943128.

The previous prime is 205900316101. The next prime is 205900316147. The reversal of 205900316143 is 341613009502.

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 205900316143 - 2²¹ = 205898218991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205900316099 and 205900316108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205900316147) 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, 296685988 + ... + 296686681.

It is an arithmetic number, because the mean of its divisors is an integer number (51623422290).

Almost surely, 2^205900316143 is an apocalyptic number.

205900316143 is a deficient number, since it is larger than the sum of its proper divisors (593373017).

205900316143 is an equidigital number, since it uses as much as digits as its factorization.

205900316143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593373016.

The product of its (nonzero) digits is 19440, while the sum is 34.

The spelling of 205900316143 in words is "two hundred five billion, nine hundred million, three hundred sixteen thousand, one hundred forty-three".