505200445217 has 4 divisors (see below), whose sum is σ = 544062017940. Its totient is φ = 466338872496.

The previous prime is 505200445153. The next prime is 505200445229. The reversal of 505200445217 is 712544002505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 135671408896 + 369529036321 = 368336^2 + 607889^2 .

It is a cyclic number.

It is not a de Polignac number, because 505200445217 - 2⁶ = 505200445153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505200445237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19430786342 + ... + 19430786367.

It is an arithmetic number, because the mean of its divisors is an integer number (136015504485).

Almost surely, 2^505200445217 is an apocalyptic number.

It is an amenable number.

505200445217 is a deficient number, since it is larger than the sum of its proper divisors (38861572723).

505200445217 is a wasteful number, since it uses less digits than its factorization.

505200445217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38861572722.

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

The spelling of 505200445217 in words is "five hundred five billion, two hundred million, four hundred forty-five thousand, two hundred seventeen".