205140542050124 has 24 divisors (see below), whose sum is σ = 359921803009440. Its totient is φ = 102305868597504.

The previous prime is 205140542050111. The next prime is 205140542050133. The reversal of 205140542050124 is 421050245041502.

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, 9482519 + ... + 22365134.

It is an arithmetic number, because the mean of its divisors is an integer number (14996741792060).

Almost surely, 2^{205140542050124} is an apocalyptic number.

It is an amenable number.

205140542050124 is a deficient number, since it is larger than the sum of its proper divisors (154781260959316).

205140542050124 is a wasteful number, since it uses less digits than its factorization.

205140542050124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31851809 (or 31851807 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 35.

Adding to 205140542050124 its reverse (421050245041502), we get a palindrome (626190787091626).

The spelling of 205140542050124 in words is "two hundred five trillion, one hundred forty billion, five hundred forty-two million, fifty thousand, one hundred twenty-four".