505869242085 has 40 divisors (see below), whose sum is σ = 919239666840. Its totient is φ = 266101065216.

The previous prime is 505869242059. The next prime is 505869242173. The reversal of 505869242085 is 580242968505.

505869242085 is a `hidden beast` number, since 5 + 0 + 58 + 6 + 92 + 420 + 85 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 11965296996 + 493903945089 = 109386^2 + 702783^2 .

It is not a de Polignac number, because 505869242085 - 2¹⁰ = 505869241061 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8525640 + ... + 8584769.

It is an arithmetic number, because the mean of its divisors is an integer number (22980991671).

Almost surely, 2^505869242085 is an apocalyptic number.

It is an amenable number.

505869242085 is a deficient number, since it is larger than the sum of its proper divisors (413370424755).

505869242085 is a wasteful number, since it uses less digits than its factorization.

505869242085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17110499 (or 17110490 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 54.

The spelling of 505869242085 in words is "five hundred five billion, eight hundred sixty-nine million, two hundred forty-two thousand, eighty-five".