505236645165 has 32 divisors (see below), whose sum is σ = 923971276800. Its totient is φ = 230937827904.

The previous prime is 505236645161. The next prime is 505236645181. The reversal of 505236645165 is 561546632505.

It is not a de Polignac number, because 505236645165 - 2² = 505236645161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505236645161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 613186 + ... + 1177484.

It is an arithmetic number, because the mean of its divisors is an integer number (28874102400).

Almost surely, 2^505236645165 is an apocalyptic number.

It is an amenable number.

505236645165 is a deficient number, since it is larger than the sum of its proper divisors (418734631635).

505236645165 is a wasteful number, since it uses less digits than its factorization.

505236645165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572841.

The product of its (nonzero) digits is 3240000, while the sum is 48.

The spelling of 505236645165 in words is "five hundred five billion, two hundred thirty-six million, six hundred forty-five thousand, one hundred sixty-five".