11455820213 has 2 divisors, whose sum is σ = 11455820214. Its totient is φ = 11455820212.

The previous prime is 11455820161. The next prime is 11455820227. The reversal of 11455820213 is 31202855411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6185350609 + 5270469604 = 78647^2 + 72598^2 .

It is a cyclic number.

It is not a de Polignac number, because 11455820213 - 2¹² = 11455816117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11455820213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11455820113) 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, 5727910106 + 5727910107.

It is an arithmetic number, because the mean of its divisors is an integer number (5727910107).

Almost surely, 2^11455820213 is an apocalyptic number.

It is an amenable number.

11455820213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11455820213 is an equidigital number, since it uses as much as digits as its factorization.

11455820213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 32.

The spelling of 11455820213 in words is "eleven billion, four hundred fifty-five million, eight hundred twenty thousand, two hundred thirteen".