1305016563061 has 2 divisors, whose sum is σ = 1305016563062. Its totient is φ = 1305016563060.

The previous prime is 1305016563049. The next prime is 1305016563101. The reversal of 1305016563061 is 1603656105031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1266455386161 + 38561176900 = 1125369^2 + 196370^2 .

It is a cyclic number.

It is not a de Polignac number, because 1305016563061 - 2³⁷ = 1167577609589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1305016563061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1305016563661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652508281530 + 652508281531.

It is an arithmetic number, because the mean of its divisors is an integer number (652508281531).

Almost surely, 2^{1305016563061} is an apocalyptic number.

It is an amenable number.

1305016563061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305016563061 is an equidigital number, since it uses as much as digits as its factorization.

1305016563061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 1305016563061 in words is "one trillion, three hundred five billion, sixteen million, five hundred sixty-three thousand, sixty-one".