36520465565 has 16 divisors (see below), whose sum is σ = 44311258992. Its totient is φ = 28892381184.

The previous prime is 36520465559. The next prime is 36520465609. The reversal of 36520465565 is 56556402563.

It can be written as a sum of positive squares in 8 ways, for example, as 2259195961 + 34261269604 = 47531^2 + 185098^2 .

It is a cyclic number.

It is not a de Polignac number, because 36520465565 - 2³² = 32225498269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 600017 + ... + 658073.

It is an arithmetic number, because the mean of its divisors is an integer number (2769453687).

Almost surely, 2^36520465565 is an apocalyptic number.

It is an amenable number.

36520465565 is a deficient number, since it is larger than the sum of its proper divisors (7790793427).

36520465565 is a wasteful number, since it uses less digits than its factorization.

36520465565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59456.

The product of its (nonzero) digits is 3240000, while the sum is 47.

The spelling of 36520465565 in words is "thirty-six billion, five hundred twenty million, four hundred sixty-five thousand, five hundred sixty-five".