11665322416415 has 4 divisors (see below), whose sum is σ = 13998386899704. Its totient is φ = 9332257933128.

The previous prime is 11665322416411. The next prime is 11665322416421. The reversal of 11665322416415 is 51461422356611.

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

It is a cyclic number.

It is not a de Polignac number, because 11665322416415 - 2² = 11665322416411 is a prime.

It is a super-2 number, since 2×11665322416415² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11665322416415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11665322416411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1166532241637 + ... + 1166532241646.

It is an arithmetic number, because the mean of its divisors is an integer number (3499596724926).

Almost surely, 2^{11665322416415} is an apocalyptic number.

11665322416415 is a deficient number, since it is larger than the sum of its proper divisors (2333064483289).

11665322416415 is an equidigital number, since it uses as much as digits as its factorization.

11665322416415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333064483288.

The product of its digits is 1036800, while the sum is 47.

The spelling of 11665322416415 in words is "eleven trillion, six hundred sixty-five billion, three hundred twenty-two million, four hundred sixteen thousand, four hundred fifteen".