13126771804541 has 2 divisors, whose sum is σ = 13126771804542. Its totient is φ = 13126771804540.

The previous prime is 13126771804519. The next prime is 13126771804609. The reversal of 13126771804541 is 14540817762131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11952266412025 + 1174505392516 = 3457205^2 + 1083746^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13126771804541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13126771804541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13126771804501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6563385902270 + 6563385902271.

It is an arithmetic number, because the mean of its divisors is an integer number (6563385902271).

Almost surely, 2^{13126771804541} is an apocalyptic number.

It is an amenable number.

13126771804541 is a deficient number, since it is larger than the sum of its proper divisors (1).

13126771804541 is an equidigital number, since it uses as much as digits as its factorization.

13126771804541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 13126771804541 in words is "thirteen trillion, one hundred twenty-six billion, seven hundred seventy-one million, eight hundred four thousand, five hundred forty-one".