11670981671 has 8 divisors (see below), whose sum is σ = 11842467840. Its totient is φ = 11500230712.

The previous prime is 11670981659. The next prime is 11670981733. The reversal of 11670981671 is 17618907611.

It is a happy number.

11670981671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11670981671 - 2⁶ = 11670981607 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 (11670981631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151781 + ... + 215358.

It is an arithmetic number, because the mean of its divisors is an integer number (1480308480).

Almost surely, 2^11670981671 is an apocalyptic number.

11670981671 is a deficient number, since it is larger than the sum of its proper divisors (171486169).

11670981671 is an equidigital number, since it uses as much as digits as its factorization.

11670981671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367605.

The product of its (nonzero) digits is 127008, while the sum is 47.

The spelling of 11670981671 in words is "eleven billion, six hundred seventy million, nine hundred eighty-one thousand, six hundred seventy-one".