205934515682 has 16 divisors (see below), whose sum is σ = 360235305600. Its totient is φ = 88257649284.

The previous prime is 205934515649. The next prime is 205934515711. The reversal of 205934515682 is 286515439502.

It is a self number, because there is not a number n which added to its sum of digits gives 205934515682.

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 7 ways as a sum of consecutive naturals, for example, 150097358 + ... + 150098729.

It is an arithmetic number, because the mean of its divisors is an integer number (22514706600).

Almost surely, 2^205934515682 is an apocalyptic number.

205934515682 is a deficient number, since it is larger than the sum of its proper divisors (154300789918).

205934515682 is an equidigital number, since it uses as much as digits as its factorization.

205934515682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300196110 (or 300196096 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 50.

The spelling of 205934515682 in words is "two hundred five billion, nine hundred thirty-four million, five hundred fifteen thousand, six hundred eighty-two".