205101050550 has 48 divisors (see below), whose sum is σ = 554891573952. Its totient is φ = 49721466400.

The previous prime is 205101050519. The next prime is 205101050591. The reversal of 205101050550 is 55050101502.

It is a self number, because there is not a number n which added to its sum of digits gives 205101050550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62150184 + ... + 62153483.

It is an arithmetic number, because the mean of its divisors is an integer number (11560241124).

Almost surely, 2^205101050550 is an apocalyptic number.

205101050550 is an abundant number, since it is smaller than the sum of its proper divisors (349790523402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205101050550 is a wasteful number, since it uses less digits than its factorization.

205101050550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124303693 (or 124303688 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 24.

The spelling of 205101050550 in words is "two hundred five billion, one hundred one million, fifty thousand, five hundred fifty".