505550555065 has 16 divisors (see below), whose sum is σ = 643321388160. Its totient is φ = 380072170240.

The previous prime is 505550555047. The next prime is 505550555077. The reversal of 505550555065 is 560555055505.

It is a happy number.

It is not a de Polignac number, because 505550555065 - 2⁵ = 505550555033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4456621 + ... + 4568650.

It is an arithmetic number, because the mean of its divisors is an integer number (40207586760).

Almost surely, 2^505550555065 is an apocalyptic number.

It is an amenable number.

505550555065 is a deficient number, since it is larger than the sum of its proper divisors (137770833095).

505550555065 is a wasteful number, since it uses less digits than its factorization.

505550555065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9025952.

The product of its (nonzero) digits is 2343750, while the sum is 46.

The spelling of 505550555065 in words is "five hundred five billion, five hundred fifty million, five hundred fifty-five thousand, sixty-five".