11855774159 has 2 divisors, whose sum is σ = 11855774160. Its totient is φ = 11855774158.

The previous prime is 11855774153. The next prime is 11855774201. The reversal of 11855774159 is 95147755811.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11855774159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11855774159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11855774153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5927887079 + 5927887080.

It is an arithmetic number, because the mean of its divisors is an integer number (5927887080).

Almost surely, 2^11855774159 is an apocalyptic number.

11855774159 is a deficient number, since it is larger than the sum of its proper divisors (1).

11855774159 is an equidigital number, since it uses as much as digits as its factorization.

11855774159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764000, while the sum is 53.

The spelling of 11855774159 in words is "eleven billion, eight hundred fifty-five million, seven hundred seventy-four thousand, one hundred fifty-nine".