205371668371 has 4 divisors (see below), whose sum is σ = 205372615744. Its totient is φ = 205370721000.

The previous prime is 205371668357. The next prime is 205371668429. The reversal of 205371668371 is 173866173502.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 205371668371 - 2⁹ = 205371667859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205371668311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30046 + ... + 641596.

It is an arithmetic number, because the mean of its divisors is an integer number (51343153936).

Almost surely, 2^205371668371 is an apocalyptic number.

205371668371 is a deficient number, since it is larger than the sum of its proper divisors (947373).

205371668371 is an equidigital number, since it uses as much as digits as its factorization.

205371668371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947372.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 205371668371 in words is "two hundred five billion, three hundred seventy-one million, six hundred sixty-eight thousand, three hundred seventy-one".