36505103665 has 4 divisors (see below), whose sum is σ = 43806124404. Its totient is φ = 29204082928.

The previous prime is 36505103623. The next prime is 36505103671. The reversal of 36505103665 is 56630150563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56630150563 = 7 ⋅8090021509.

It can be written as a sum of positive squares in 2 ways, for example, as 18152711824 + 18352391841 = 134732^2 + 135471^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36505103665 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3650510362 + ... + 3650510371.

It is an arithmetic number, because the mean of its divisors is an integer number (10951531101).

Almost surely, 2^36505103665 is an apocalyptic number.

It is an amenable number.

36505103665 is a deficient number, since it is larger than the sum of its proper divisors (7301020739).

36505103665 is an equidigital number, since it uses as much as digits as its factorization.

36505103665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7301020738.

The product of its (nonzero) digits is 243000, while the sum is 40.

The spelling of 36505103665 in words is "thirty-six billion, five hundred five million, one hundred three thousand, six hundred sixty-five".