205501472450 has 48 divisors (see below), whose sum is σ = 392743089024. Its totient is φ = 79942334400.

The previous prime is 205501472447. The next prime is 205501472461. The reversal of 205501472450 is 54274105502.

It is a self number, because there is not a number n which added to its sum of digits gives 205501472450.

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 23 ways as a sum of consecutive naturals, for example, 4206665 + ... + 4255235.

It is an arithmetic number, because the mean of its divisors is an integer number (8182147688).

Almost surely, 2^205501472450 is an apocalyptic number.

205501472450 is a deficient number, since it is larger than the sum of its proper divisors (187241616574).

205501472450 is a wasteful number, since it uses less digits than its factorization.

205501472450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50907 (or 50902 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 35.

Adding to 205501472450 its reverse (54274105502), we get a palindrome (259775577952).

The spelling of 205501472450 in words is "two hundred five billion, five hundred one million, four hundred seventy-two thousand, four hundred fifty".