1147478009617 has 2 divisors, whose sum is σ = 1147478009618. Its totient is φ = 1147478009616.

The previous prime is 1147478009611. The next prime is 1147478009627. The reversal of 1147478009617 is 7169008747411.

It is a Cunningham number, because it is equal to 1071204²+1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1147478009616 + 1 = 1071204^2 + 1^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1147478009617 is a prime.

It is not a weakly prime, because it can be changed into another prime (1147478009611) 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, 573739004808 + 573739004809.

It is an arithmetic number, because the mean of its divisors is an integer number (573739004809).

Almost surely, 2^{1147478009617} is an apocalyptic number.

It is an amenable number.

1147478009617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147478009617 is an equidigital number, since it uses as much as digits as its factorization.

1147478009617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2370816, while the sum is 55.

The spelling of 1147478009617 in words is "one trillion, one hundred forty-seven billion, four hundred seventy-eight million, nine thousand, six hundred seventeen".