15847895316361 has 2 divisors, whose sum is σ = 15847895316362. Its totient is φ = 15847895316360.

The previous prime is 15847895316349. The next prime is 15847895316431. The reversal of 15847895316361 is 16361359874851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10882378334025 + 4965516982336 = 3298845^2 + 2228344^2 .

It is a cyclic number.

It is not a de Polignac number, because 15847895316361 - 2²⁹ = 15847358445449 is a prime.

It is not a weakly prime, because it can be changed into another prime (15847895316761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7923947658180 + 7923947658181.

It is an arithmetic number, because the mean of its divisors is an integer number (7923947658181).

Almost surely, 2^{15847895316361} is an apocalyptic number.

It is an amenable number.

15847895316361 is a deficient number, since it is larger than the sum of its proper divisors (1).

15847895316361 is an equidigital number, since it uses as much as digits as its factorization.

15847895316361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 130636800, while the sum is 67.

The spelling of 15847895316361 in words is "fifteen trillion, eight hundred forty-seven billion, eight hundred ninety-five million, three hundred sixteen thousand, three hundred sixty-one".