11671809368 has 8 divisors (see below), whose sum is σ = 21884642580. Its totient is φ = 5835904680.

The previous prime is 11671809353. The next prime is 11671809403. The reversal of 11671809368 is 86390817611.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×11671809368² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 729488078 + ... + 729488093.

Almost surely, 2^11671809368 is an apocalyptic number.

It is an amenable number.

11671809368 is a deficient number, since it is larger than the sum of its proper divisors (10212833212).

11671809368 is a wasteful number, since it uses less digits than its factorization.

11671809368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458976177 (or 1458976173 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 50.

The spelling of 11671809368 in words is "eleven billion, six hundred seventy-one million, eight hundred nine thousand, three hundred sixty-eight".