11780159 has 4 divisors (see below), whose sum is σ = 11787480. Its totient is φ = 11772840.

The previous prime is 11780149. The next prime is 11780179. The reversal of 11780159 is 95108711.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 95108711 = 67 ⋅1419533.

It is a cyclic number.

It is not a de Polignac number, because 11780159 - 2⁸ = 11779903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11780149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77 + ... + 4854.

It is an arithmetic number, because the mean of its divisors is an integer number (2946870).

Almost surely, 2^11780159 is an apocalyptic number.

11780159 is a deficient number, since it is larger than the sum of its proper divisors (7321).

11780159 is an equidigital number, since it uses as much as digits as its factorization.

11780159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7320.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 11780159 is about 3432.2236232507. The cubic root of 11780159 is about 227.5361388470.

The spelling of 11780159 in words is "eleven million, seven hundred eighty thousand, one hundred fifty-nine".