11615666000065 has 4 divisors (see below), whose sum is σ = 13938799200084. Its totient is φ = 9292532800048.

The previous prime is 11615666000053. The next prime is 11615666000093. The reversal of 11615666000065 is 56000066651611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2212807977601 + 9402858022464 = 1487551^2 + 3066408^2 .

It is a cyclic number.

It is not a de Polignac number, because 11615666000065 - 2¹¹ = 11615665998017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11615665999985 and 11615666000030.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1161566600002 + ... + 1161566600011.

It is an arithmetic number, because the mean of its divisors is an integer number (3484699800021).

Almost surely, 2^{11615666000065} is an apocalyptic number.

It is an amenable number.

11615666000065 is a deficient number, since it is larger than the sum of its proper divisors (2323133200019).

11615666000065 is an equidigital number, since it uses as much as digits as its factorization.

11615666000065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323133200018.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 11615666000065 in words is "eleven trillion, six hundred fifteen billion, six hundred sixty-six million, sixty-five", and thus it is an aban number.