3161566745737 has 2 divisors, whose sum is σ = 3161566745738. Its totient is φ = 3161566745736.

The previous prime is 3161566745731. The next prime is 3161566745741. The reversal of 3161566745737 is 7375476651613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3100543418896 + 61023326841 = 1760836^2 + 247029^2 .

It is a cyclic number.

It is not a de Polignac number, because 3161566745737 - 2¹¹ = 3161566743689 is a prime.

It is not a weakly prime, because it can be changed into another prime (3161566745731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1580783372868 + 1580783372869.

It is an arithmetic number, because the mean of its divisors is an integer number (1580783372869).

Almost surely, 2^{3161566745737} is an apocalyptic number.

It is an amenable number.

3161566745737 is a deficient number, since it is larger than the sum of its proper divisors (1).

3161566745737 is an equidigital number, since it uses as much as digits as its factorization.

3161566745737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 66679200, while the sum is 61.

The spelling of 3161566745737 in words is "three trillion, one hundred sixty-one billion, five hundred sixty-six million, seven hundred forty-five thousand, seven hundred thirty-seven".