8561935126441 has 2 divisors, whose sum is σ = 8561935126442. Its totient is φ = 8561935126440.

The previous prime is 8561935126417. The next prime is 8561935126541. The reversal of 8561935126441 is 1446215391658.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4524005634841 + 4037929491600 = 2126971^2 + 2009460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8561935126441 is a prime.

It is not a weakly prime, because it can be changed into another prime (8561935126541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4280967563220 + 4280967563221.

It is an arithmetic number, because the mean of its divisors is an integer number (4280967563221).

Almost surely, 2^{8561935126441} is an apocalyptic number.

It is an amenable number.

8561935126441 is a deficient number, since it is larger than the sum of its proper divisors (1).

8561935126441 is an equidigital number, since it uses as much as digits as its factorization.

8561935126441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6220800, while the sum is 55.

The spelling of 8561935126441 in words is "eight trillion, five hundred sixty-one billion, nine hundred thirty-five million, one hundred twenty-six thousand, four hundred forty-one".