8518361475761 has 2 divisors, whose sum is σ = 8518361475762. Its totient is φ = 8518361475760.

The previous prime is 8518361475751. The next prime is 8518361475781. The reversal of 8518361475761 is 1675741638158.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8334422563600 + 183938912161 = 2886940^2 + 428881^2 .

It is a cyclic number.

It is not a de Polignac number, because 8518361475761 - 2²² = 8518357281457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8518361475694 and 8518361475703.

It is not a weakly prime, because it can be changed into another prime (8518361475751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4259180737880 + 4259180737881.

It is an arithmetic number, because the mean of its divisors is an integer number (4259180737881).

Almost surely, 2^{8518361475761} is an apocalyptic number.

It is an amenable number.

8518361475761 is a deficient number, since it is larger than the sum of its proper divisors (1).

8518361475761 is an equidigital number, since it uses as much as digits as its factorization.

8518361475761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33868800, while the sum is 62.

The spelling of 8518361475761 in words is "eight trillion, five hundred eighteen billion, three hundred sixty-one million, four hundred seventy-five thousand, seven hundred sixty-one".