52785636165 has 24 divisors (see below), whose sum is σ = 91787443800. Its totient is φ = 28062388224.

The previous prime is 52785636149. The next prime is 52785636199. The reversal of 52785636165 is 56163658725.

It is a happy number.

52785636165 is a `hidden beast` number, since 5 + 2 + 78 + 563 + 6 + 1 + 6 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3046377636 + 49739258529 = 55194^2 + 223023^2 .

It is not a de Polignac number, because 52785636165 - 2⁴ = 52785636149 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1859740 + ... + 1887909.

It is an arithmetic number, because the mean of its divisors is an integer number (3824476825).

Almost surely, 2^52785636165 is an apocalyptic number.

It is an amenable number.

52785636165 is a deficient number, since it is larger than the sum of its proper divisors (39001807635).

52785636165 is a wasteful number, since it uses less digits than its factorization.

52785636165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747973 (or 3747970 counting only the distinct ones).

The product of its digits is 9072000, while the sum is 54.

The spelling of 52785636165 in words is "fifty-two billion, seven hundred eighty-five million, six hundred thirty-six thousand, one hundred sixty-five".