11787821159 has 2 divisors, whose sum is σ = 11787821160. Its totient is φ = 11787821158.

The previous prime is 11787821119. The next prime is 11787821167. The reversal of 11787821159 is 95112878711.

It is a strong prime.

It is an emirp because it is prime and its reverse (95112878711) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11787821159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11787821119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5893910579 + 5893910580.

It is an arithmetic number, because the mean of its divisors is an integer number (5893910580).

Almost surely, 2^11787821159 is an apocalyptic number.

11787821159 is a deficient number, since it is larger than the sum of its proper divisors (1).

11787821159 is an equidigital number, since it uses as much as digits as its factorization.

11787821159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 50.

The spelling of 11787821159 in words is "eleven billion, seven hundred eighty-seven million, eight hundred twenty-one thousand, one hundred fifty-nine".