1361364657161 has 2 divisors, whose sum is σ = 1361364657162. Its totient is φ = 1361364657160.

The previous prime is 1361364657119. The next prime is 1361364657179. The reversal of 1361364657161 is 1617564631631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 687126602761 + 674238054400 = 828931^2 + 821120^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361364657161 - 2¹⁰ = 1361364656137 is a prime.

It is not a weakly prime, because it can be changed into another prime (1361364657061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680682328580 + 680682328581.

It is an arithmetic number, because the mean of its divisors is an integer number (680682328581).

Almost surely, 2^{1361364657161} is an apocalyptic number.

It is an amenable number.

1361364657161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361364657161 is an equidigital number, since it uses as much as digits as its factorization.

1361364657161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 50.

The spelling of 1361364657161 in words is "one trillion, three hundred sixty-one billion, three hundred sixty-four million, six hundred fifty-seven thousand, one hundred sixty-one".