1186556855147 has 2 divisors, whose sum is σ = 1186556855148. Its totient is φ = 1186556855146.

The previous prime is 1186556855117. The next prime is 1186556855149. The reversal of 1186556855147 is 7415586556811.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1186556855147 - 2⁸ = 1186556854891 is a prime.

Together with 1186556855149, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1186556855147.

It is not a weakly prime, because it can be changed into another prime (1186556855149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593278427573 + 593278427574.

It is an arithmetic number, because the mean of its divisors is an integer number (593278427574).

Almost surely, 2^{1186556855147} is an apocalyptic number.

1186556855147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1186556855147 is an equidigital number, since it uses as much as digits as its factorization.

1186556855147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320000, while the sum is 62.

The spelling of 1186556855147 in words is "one trillion, one hundred eighty-six billion, five hundred fifty-six million, eight hundred fifty-five thousand, one hundred forty-seven".