6542166041 has 2 divisors, whose sum is σ = 6542166042. Its totient is φ = 6542166040.

The previous prime is 6542166031. The next prime is 6542166133. The reversal of 6542166041 is 1406612456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3814297600 + 2727868441 = 61760^2 + 52229^2 .

It is a cyclic number.

It is not a de Polignac number, because 6542166041 - 2¹⁴ = 6542149657 is a prime.

It is a super-2 number, since 2×6542166041² = 85599873016027227362, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6542165992 and 6542166010.

It is not a weakly prime, because it can be changed into another prime (6542166031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3271083020 + 3271083021.

It is an arithmetic number, because the mean of its divisors is an integer number (3271083021).

Almost surely, 2^6542166041 is an apocalyptic number.

It is an amenable number.

6542166041 is a deficient number, since it is larger than the sum of its proper divisors (1).

6542166041 is an equidigital number, since it uses as much as digits as its factorization.

6542166041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 6542166041 is about 80883.6574407958. The cubic root of 6542166041 is about 1870.2824018965.

Adding to 6542166041 its reverse (1406612456), we get a palindrome (7948778497).

The spelling of 6542166041 in words is "six billion, five hundred forty-two million, one hundred sixty-six thousand, forty-one".