6591144947 has 2 divisors, whose sum is σ = 6591144948. Its totient is φ = 6591144946.

The previous prime is 6591144943. The next prime is 6591145003. The reversal of 6591144947 is 7494411956.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6591144947 - 2² = 6591144943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6591144895 and 6591144904.

It is not a weakly prime, because it can be changed into another prime (6591144943) 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, 3295572473 + 3295572474.

It is an arithmetic number, because the mean of its divisors is an integer number (3295572474).

Almost surely, 2^6591144947 is an apocalyptic number.

6591144947 is a deficient number, since it is larger than the sum of its proper divisors (1).

6591144947 is an equidigital number, since it uses as much as digits as its factorization.

6591144947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The square root of 6591144947 is about 81185.8666702524. The cubic root of 6591144947 is about 1874.9381855295.

The spelling of 6591144947 in words is "six billion, five hundred ninety-one million, one hundred forty-four thousand, nine hundred forty-seven".