42165560113 has 2 divisors, whose sum is σ = 42165560114. Its totient is φ = 42165560112.

The previous prime is 42165560089. The next prime is 42165560123. The reversal of 42165560113 is 31106556124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37329331264 + 4836228849 = 193208^2 + 69543^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42165560113 is a prime.

It is not a weakly prime, because it can be changed into another prime (42165560123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21082780056 + 21082780057.

It is an arithmetic number, because the mean of its divisors is an integer number (21082780057).

Almost surely, 2^42165560113 is an apocalyptic number.

It is an amenable number.

42165560113 is a deficient number, since it is larger than the sum of its proper divisors (1).

42165560113 is an equidigital number, since it uses as much as digits as its factorization.

42165560113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 42165560113 in words is "forty-two billion, one hundred sixty-five million, five hundred sixty thousand, one hundred thirteen".