11666040105441 has 4 divisors (see below), whose sum is σ = 15554720140592. Its totient is φ = 7777360070292.

The previous prime is 11666040105407. The next prime is 11666040105443. The reversal of 11666040105441 is 14450104066611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11666040105441 - 2⁴³ = 2869947083233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11666040105441.

It is not an unprimeable number, because it can be changed into a prime (11666040105443) 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, 1944340017571 + ... + 1944340017576.

It is an arithmetic number, because the mean of its divisors is an integer number (3888680035148).

Almost surely, 2^{11666040105441} is an apocalyptic number.

It is an amenable number.

11666040105441 is a deficient number, since it is larger than the sum of its proper divisors (3888680035151).

11666040105441 is an equidigital number, since it uses as much as digits as its factorization.

11666040105441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3888680035150.

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 11666040105441 in words is "eleven trillion, six hundred sixty-six billion, forty million, one hundred five thousand, four hundred forty-one".