11818699213 has 2 divisors, whose sum is σ = 11818699214. Its totient is φ = 11818699212.

The previous prime is 11818699199. The next prime is 11818699229. The reversal of 11818699213 is 31299681811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6554035849 + 5264663364 = 80957^2 + 72558^2 .

It is a cyclic number.

It is not a de Polignac number, because 11818699213 - 2⁹ = 11818698701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11818699273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5909349606 + 5909349607.

It is an arithmetic number, because the mean of its divisors is an integer number (5909349607).

Almost surely, 2^11818699213 is an apocalyptic number.

It is an amenable number.

11818699213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11818699213 is an equidigital number, since it uses as much as digits as its factorization.

11818699213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 49.

The spelling of 11818699213 in words is "eleven billion, eight hundred eighteen million, six hundred ninety-nine thousand, two hundred thirteen".