505561059999 has 12 divisors (see below), whose sum is σ = 730268823336. Its totient is φ = 337034264112.

The previous prime is 505561059917. The next prime is 505561060007. The reversal of 505561059999 is 999950165505.

505561059999 is a `hidden beast` number, since 5 + 0 + 5 + 5 + 610 + 5 + 9 + 9 + 9 + 9 = 666.

It is not a de Polignac number, because 505561059999 - 2²⁰ = 505560011423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505561009999) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 12984 + ... + 1005629.

It is an arithmetic number, because the mean of its divisors is an integer number (60855735278).

Almost surely, 2^505561059999 is an apocalyptic number.

505561059999 is a deficient number, since it is larger than the sum of its proper divisors (224707763337).

505561059999 is a wasteful number, since it uses less digits than its factorization.

505561059999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073766 (or 1073763 counting only the distinct ones).

The product of its (nonzero) digits is 24603750, while the sum is 63.

The spelling of 505561059999 in words is "five hundred five billion, five hundred sixty-one million, fifty-nine thousand, nine hundred ninety-nine".