6445166341 has 2 divisors, whose sum is σ = 6445166342. Its totient is φ = 6445166340.

The previous prime is 6445166291. The next prime is 6445166347. The reversal of 6445166341 is 1436615446.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6389604225 + 55562116 = 79935^2 + 7454^2 .

It is a cyclic number.

It is not a de Polignac number, because 6445166341 - 2⁷ = 6445166213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6445166294 and 6445166303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6445166347) 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, 3222583170 + 3222583171.

It is an arithmetic number, because the mean of its divisors is an integer number (3222583171).

Almost surely, 2^6445166341 is an apocalyptic number.

It is an amenable number.

6445166341 is a deficient number, since it is larger than the sum of its proper divisors (1).

6445166341 is an equidigital number, since it uses as much as digits as its factorization.

6445166341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 40.

The square root of 6445166341 is about 80281.7933344790. The cubic root of 6445166341 is about 1860.9928738646.

The spelling of 6445166341 in words is "six billion, four hundred forty-five million, one hundred sixty-six thousand, three hundred forty-one".