1460563556581 has 2 divisors, whose sum is σ = 1460563556582. Its totient is φ = 1460563556580.

The previous prime is 1460563556533. The next prime is 1460563556587. The reversal of 1460563556581 is 1856553650641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1459191520900 + 1372035681 = 1207970^2 + 37041^2 .

It is a cyclic number.

It is not a de Polignac number, because 1460563556581 - 2⁹ = 1460563556069 is a prime.

It is a super-2 number, since 2×1460563556581² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1460563556587) 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, 730281778290 + 730281778291.

It is an arithmetic number, because the mean of its divisors is an integer number (730281778291).

Almost surely, 2^{1460563556581} is an apocalyptic number.

It is an amenable number.

1460563556581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1460563556581 is an equidigital number, since it uses as much as digits as its factorization.

1460563556581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960000, while the sum is 55.

The spelling of 1460563556581 in words is "one trillion, four hundred sixty billion, five hundred sixty-three million, five hundred fifty-six thousand, five hundred eighty-one".