205068275771 has 4 divisors (see below), whose sum is σ = 205157944992. Its totient is φ = 204978606552.

The previous prime is 205068275759. The next prime is 205068275777. The reversal of 205068275771 is 177572860502.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205068275771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205068275777) 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, 44831180 + ... + 44835753.

It is an arithmetic number, because the mean of its divisors is an integer number (51289486248).

Almost surely, 2^205068275771 is an apocalyptic number.

205068275771 is a deficient number, since it is larger than the sum of its proper divisors (89669221).

205068275771 is an equidigital number, since it uses as much as digits as its factorization.

205068275771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89669220.

The product of its (nonzero) digits is 1646400, while the sum is 50.

The spelling of 205068275771 in words is "two hundred five billion, sixty-eight million, two hundred seventy-five thousand, seven hundred seventy-one".