505695608985 has 16 divisors (see below), whose sum is σ = 924700542336. Its totient is φ = 231175135488.

The previous prime is 505695608981. The next prime is 505695609059. The reversal of 505695608985 is 589806596505.

It is not a de Polignac number, because 505695608985 - 2² = 505695608981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505695608981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2408074224 + ... + 2408074433.

It is an arithmetic number, because the mean of its divisors is an integer number (57793783896).

Almost surely, 2^505695608985 is an apocalyptic number.

It is an amenable number.

505695608985 is a deficient number, since it is larger than the sum of its proper divisors (419004933351).

505695608985 is a wasteful number, since it uses less digits than its factorization.

505695608985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4816148672.

The product of its (nonzero) digits is 116640000, while the sum is 66.

The spelling of 505695608985 in words is "five hundred five billion, six hundred ninety-five million, six hundred eight thousand, nine hundred eighty-five".