11681784853 has 2 divisors, whose sum is σ = 11681784854. Its totient is φ = 11681784852.

The previous prime is 11681784817. The next prime is 11681784859. The reversal of 11681784853 is 35848718611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8723186404 + 2958598449 = 93398^2 + 54393^2 .

It is an emirp because it is prime and its reverse (35848718611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11681784853 - 2³³ = 3091850261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11681784853.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11681784859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5840892426 + 5840892427.

It is an arithmetic number, because the mean of its divisors is an integer number (5840892427).

Almost surely, 2^11681784853 is an apocalyptic number.

It is an amenable number.

11681784853 is a deficient number, since it is larger than the sum of its proper divisors (1).

11681784853 is an equidigital number, since it uses as much as digits as its factorization.

11681784853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1290240, while the sum is 52.

The spelling of 11681784853 in words is "eleven billion, six hundred eighty-one million, seven hundred eighty-four thousand, eight hundred fifty-three".