11604891671 has 4 divisors (see below), whose sum is σ = 11682777000. Its totient is φ = 11527006344.

The previous prime is 11604891659. The next prime is 11604891731. The reversal of 11604891671 is 17619840611.

11604891671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11604891671 - 2¹⁴ = 11604875287 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 (11604891601) 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 3 ways as a sum of consecutive naturals, for example, 38942441 + ... + 38942738.

It is an arithmetic number, because the mean of its divisors is an integer number (2920694250).

Almost surely, 2^11604891671 is an apocalyptic number.

11604891671 is a deficient number, since it is larger than the sum of its proper divisors (77885329).

11604891671 is an equidigital number, since it uses as much as digits as its factorization.

11604891671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77885328.

The product of its (nonzero) digits is 72576, while the sum is 44.

The spelling of 11604891671 in words is "eleven billion, six hundred four million, eight hundred ninety-one thousand, six hundred seventy-one".