36520610561 has 8 divisors (see below), whose sum is σ = 36582537000. Its totient is φ = 36458714880.

The previous prime is 36520610509. The next prime is 36520610579. The reversal of 36520610561 is 16501602563.

It can be written as a sum of positive squares in 4 ways, for example, as 22800625 + 36497809936 = 4775^2 + 191044^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 36520610561 - 2¹⁴ = 36520594177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36520640561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4122665 + ... + 4131513.

It is an arithmetic number, because the mean of its divisors is an integer number (4572817125).

Almost surely, 2^36520610561 is an apocalyptic number.

It is an amenable number.

36520610561 is a deficient number, since it is larger than the sum of its proper divisors (61926439).

36520610561 is an equidigital number, since it uses as much as digits as its factorization.

36520610561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15379.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 36520610561 in words is "thirty-six billion, five hundred twenty million, six hundred ten thousand, five hundred sixty-one".