1610116560509 has 2 divisors, whose sum is σ = 1610116560510. Its totient is φ = 1610116560508.

The previous prime is 1610116560491. The next prime is 1610116560517. The reversal of 1610116560509 is 9050656110161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1176092532484 + 434024028025 = 1084478^2 + 658805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1610116560509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1610116560709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805058280254 + 805058280255.

It is an arithmetic number, because the mean of its divisors is an integer number (805058280255).

Almost surely, 2^{1610116560509} is an apocalyptic number.

It is an amenable number.

1610116560509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1610116560509 is an equidigital number, since it uses as much as digits as its factorization.

1610116560509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48600, while the sum is 41.

The spelling of 1610116560509 in words is "one trillion, six hundred ten billion, one hundred sixteen million, five hundred sixty thousand, five hundred nine".