205545343121410 has 16 divisors (see below), whose sum is σ = 370155236435712. Its totient is φ = 82179555289200.

The previous prime is 205545343121357. The next prime is 205545343121507. The reversal of 205545343121410 is 14121343545502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4822722546 + ... + 4822765165.

It is an arithmetic number, because the mean of its divisors is an integer number (23134702277232).

Almost surely, 2^{205545343121410} is an apocalyptic number.

205545343121410 is a deficient number, since it is larger than the sum of its proper divisors (164609893314302).

205545343121410 is a wasteful number, since it uses less digits than its factorization.

205545343121410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9645489849.

The product of its (nonzero) digits is 288000, while the sum is 40.

Adding to 205545343121410 its reverse (14121343545502), we get a palindrome (219666686666912).

The spelling of 205545343121410 in words is "two hundred five trillion, five hundred forty-five billion, three hundred forty-three million, one hundred twenty-one thousand, four hundred ten".