11611143559 has 2 divisors, whose sum is σ = 11611143560. Its totient is φ = 11611143558.

The previous prime is 11611143541. The next prime is 11611143563. The reversal of 11611143559 is 95534111611.

It is a strong prime.

It is an emirp because it is prime and its reverse (95534111611) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11611143559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11611149559) 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, 5805571779 + 5805571780.

It is an arithmetic number, because the mean of its divisors is an integer number (5805571780).

Almost surely, 2^11611143559 is an apocalyptic number.

11611143559 is a deficient number, since it is larger than the sum of its proper divisors (1).

11611143559 is an equidigital number, since it uses as much as digits as its factorization.

11611143559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 37.

The spelling of 11611143559 in words is "eleven billion, six hundred eleven million, one hundred forty-three thousand, five hundred fifty-nine".