11780147 has 2 divisors, whose sum is σ = 11780148. Its totient is φ = 11780146.

The previous prime is 11780123. The next prime is 11780149. The reversal of 11780147 is 74108711.

It is a strong prime.

It is an emirp because it is prime and its reverse (74108711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11780147 - 2⁸ = 11779891 is a prime.

Together with 11780149, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11780149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5890073 + 5890074.

It is an arithmetic number, because the mean of its divisors is an integer number (5890074).

Almost surely, 2^11780147 is an apocalyptic number.

11780147 is a deficient number, since it is larger than the sum of its proper divisors (1).

11780147 is an equidigital number, since it uses as much as digits as its factorization.

11780147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 29.

The square root of 11780147 is about 3432.2218751124. The cubic root of 11780147 is about 227.5360615861.

Adding to 11780147 its reverse (74108711), we get a palindrome (85888858).

The spelling of 11780147 in words is "eleven million, seven hundred eighty thousand, one hundred forty-seven".