13265104243666 has 32 divisors (see below), whose sum is σ = 22087537646400. Its totient is φ = 5923983988800.

The previous prime is 13265104243627. The next prime is 13265104243711. The reversal of 13265104243666 is 66634240156231.

It is a super-2 number, since 2×13265104243666² (a number of 27 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 4458516 + ... + 6812383.

It is an arithmetic number, because the mean of its divisors is an integer number (690235551450).

Almost surely, 2^{13265104243666} is an apocalyptic number.

13265104243666 is a deficient number, since it is larger than the sum of its proper divisors (8822433402734).

13265104243666 is a wasteful number, since it uses less digits than its factorization.

13265104243666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11271850.

The product of its (nonzero) digits is 3732480, while the sum is 49.

Adding to 13265104243666 its reverse (66634240156231), we get a palindrome (79899344399897).

The spelling of 13265104243666 in words is "thirteen trillion, two hundred sixty-five billion, one hundred four million, two hundred forty-three thousand, six hundred sixty-six".