6005661065081 has 2 divisors, whose sum is σ = 6005661065082. Its totient is φ = 6005661065080.

The previous prime is 6005661065059. The next prime is 6005661065147. The reversal of 6005661065081 is 1805601665006.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4474984853056 + 1530676212025 = 2115416^2 + 1237205^2 .

It is a cyclic number.

It is not a de Polignac number, because 6005661065081 - 2¹⁸ = 6005660802937 is a prime.

It is a super-2 number, since 2×6005661065081² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6005661065381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3002830532540 + 3002830532541.

It is an arithmetic number, because the mean of its divisors is an integer number (3002830532541).

Almost surely, 2^{6005661065081} is an apocalyptic number.

It is an amenable number.

6005661065081 is a deficient number, since it is larger than the sum of its proper divisors (1).

6005661065081 is an equidigital number, since it uses as much as digits as its factorization.

6005661065081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 6005661065081 in words is "six trillion, five billion, six hundred sixty-one million, sixty-five thousand, eighty-one".