1468644125561 has 2 divisors, whose sum is σ = 1468644125562. Its totient is φ = 1468644125560.

The previous prime is 1468644125483. The next prime is 1468644125569. The reversal of 1468644125561 is 1655214468641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1167620719225 + 301023406336 = 1080565^2 + 548656^2 .

It is a cyclic number.

It is not a de Polignac number, because 1468644125561 - 2³⁴ = 1451464256377 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1468644125569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 734322062780 + 734322062781.

It is an arithmetic number, because the mean of its divisors is an integer number (734322062781).

Almost surely, 2^{1468644125561} is an apocalyptic number.

It is an amenable number.

1468644125561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1468644125561 is an equidigital number, since it uses as much as digits as its factorization.

1468644125561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5529600, while the sum is 53.

The spelling of 1468644125561 in words is "one trillion, four hundred sixty-eight billion, six hundred forty-four million, one hundred twenty-five thousand, five hundred sixty-one".