205342849475 has 6 divisors (see below), whose sum is σ = 254625133380. Its totient is φ = 164274279560.

The previous prime is 205342849469. The next prime is 205342849541. The reversal of 205342849475 is 574948243502.

It is a de Polignac number, because none of the positive numbers 2^k-205342849475 is a prime.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 4106856965 + ... + 4106857014.

It is an arithmetic number, because the mean of its divisors is an integer number (42437522230).

Almost surely, 2^205342849475 is an apocalyptic number.

205342849475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

205342849475 is a deficient number, since it is larger than the sum of its proper divisors (49282283905).

205342849475 is an equidigital number, since it uses as much as digits as its factorization.

205342849475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8213713989 (or 8213713984 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 53.

The spelling of 205342849475 in words is "two hundred five billion, three hundred forty-two million, eight hundred forty-nine thousand, four hundred seventy-five".