115747194236561 has 2 divisors, whose sum is σ = 115747194236562. Its totient is φ = 115747194236560.

The previous prime is 115747194236503. The next prime is 115747194236567. The reversal of 115747194236561 is 165632491747511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95467438313536 + 20279755923025 = 9770744^2 + 4503305^2 .

It is a cyclic number.

It is not a de Polignac number, because 115747194236561 - 2⁴² = 111349147725457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115747194236494 and 115747194236503.

It is not a weakly prime, because it can be changed into another prime (115747194236567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57873597118280 + 57873597118281.

It is an arithmetic number, because the mean of its divisors is an integer number (57873597118281).

Almost surely, 2^{115747194236561} is an apocalyptic number.

It is an amenable number.

115747194236561 is a deficient number, since it is larger than the sum of its proper divisors (1).

115747194236561 is an equidigital number, since it uses as much as digits as its factorization.

115747194236561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38102400, while the sum is 62.

The spelling of 115747194236561 in words is "one hundred fifteen trillion, seven hundred forty-seven billion, one hundred ninety-four million, two hundred thirty-six thousand, five hundred sixty-one".