11660643204671 has 8 divisors (see below), whose sum is σ = 11781037170000. Its totient is φ = 11540252936448.

The previous prime is 11660643204649. The next prime is 11660643204713. The reversal of 11660643204671 is 17640234606611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11660643204671 - 2³⁰ = 11659569462847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11660643204631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5656925 + ... + 7437881.

It is an arithmetic number, because the mean of its divisors is an integer number (1472629646250).

Almost surely, 2^{11660643204671} is an apocalyptic number.

11660643204671 is a deficient number, since it is larger than the sum of its proper divisors (120393965329).

11660643204671 is an equidigital number, since it uses as much as digits as its factorization.

11660643204671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848553.

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 11660643204671 in words is "eleven trillion, six hundred sixty billion, six hundred forty-three million, two hundred four thousand, six hundred seventy-one".