11604945671 has 16 divisors (see below), whose sum is σ = 13624404768. Its totient is φ = 9766579200.

The previous prime is 11604945643. The next prime is 11604945673. The reversal of 11604945671 is 17654940611.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11604945671 - 2¹⁸ = 11604683527 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 (11604945673) by changing a digit.

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, 497270 + ... + 520083.

It is an arithmetic number, because the mean of its divisors is an integer number (851525298).

Almost surely, 2^11604945671 is an apocalyptic number.

11604945671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11604945671 is a deficient number, since it is larger than the sum of its proper divisors (2019459097).

11604945671 is a wasteful number, since it uses less digits than its factorization.

11604945671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017442.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 11604945671 in words is "eleven billion, six hundred four million, nine hundred forty-five thousand, six hundred seventy-one".