11684212191 has 12 divisors (see below), whose sum is σ = 16880966232. Its totient is φ = 7787734416.

The previous prime is 11684212157. The next prime is 11684212193. The reversal of 11684212191 is 19121248611.

11684212191 is a `hidden beast` number, since 1 + 16 + 8 + 421 + 219 + 1 = 666.

It is not a de Polignac number, because 11684212191 - 2³¹ = 9536728543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11684212193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101836 + ... + 183681.

It is an arithmetic number, because the mean of its divisors is an integer number (1406747186).

Almost surely, 2^11684212191 is an apocalyptic number.

11684212191 is a deficient number, since it is larger than the sum of its proper divisors (5196754041).

11684212191 is a wasteful number, since it uses less digits than its factorization.

11684212191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290070 (or 290067 counting only the distinct ones).

The product of its digits is 6912, while the sum is 36.

The spelling of 11684212191 in words is "eleven billion, six hundred eighty-four million, two hundred twelve thousand, one hundred ninety-one".