205042433550 has 48 divisors (see below), whose sum is σ = 524908641792. Its totient is φ = 52914175200.

The previous prime is 205042433527. The next prime is 205042433593. The reversal of 205042433550 is 55334240502.

It is a happy number.

It is a super-2 number, since 2×205042433550² (a number of 23 digits) contains 22 as substring.

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, 22042924 + ... + 22052223.

It is an arithmetic number, because the mean of its divisors is an integer number (10935596704).

Almost surely, 2^205042433550 is an apocalyptic number.

205042433550 is an abundant number, since it is smaller than the sum of its proper divisors (319866208242).

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

205042433550 is a wasteful number, since it uses less digits than its factorization.

205042433550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44095193 (or 44095188 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 33.

The spelling of 205042433550 in words is "two hundred five billion, forty-two million, four hundred thirty-three thousand, five hundred fifty".