11684401871 has 2 divisors, whose sum is σ = 11684401872. Its totient is φ = 11684401870.

The previous prime is 11684401853. The next prime is 11684401951. The reversal of 11684401871 is 17810448611.

It is a weak prime.

It is an emirp because it is prime and its reverse (17810448611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11684401871 - 2²⁶ = 11617293007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11684409871) 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 as a sum of consecutive naturals, namely, 5842200935 + 5842200936.

It is an arithmetic number, because the mean of its divisors is an integer number (5842200936).

Almost surely, 2^11684401871 is an apocalyptic number.

11684401871 is a deficient number, since it is larger than the sum of its proper divisors (1).

11684401871 is an equidigital number, since it uses as much as digits as its factorization.

11684401871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 41.

The spelling of 11684401871 in words is "eleven billion, six hundred eighty-four million, four hundred one thousand, eight hundred seventy-one".