11684605213 has 2 divisors, whose sum is σ = 11684605214. Its totient is φ = 11684605212.

The previous prime is 11684605183. The next prime is 11684605241. The reversal of 11684605213 is 31250648611.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9192399129 + 2492206084 = 95877^2 + 49922^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11684605213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11684615213) 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, 5842302606 + 5842302607.

It is an arithmetic number, because the mean of its divisors is an integer number (5842302607).

Almost surely, 2^11684605213 is an apocalyptic number.

It is an amenable number.

11684605213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11684605213 is an equidigital number, since it uses as much as digits as its factorization.

11684605213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 11684605213 in words is "eleven billion, six hundred eighty-four million, six hundred five thousand, two hundred thirteen".