6432165281 has 2 divisors, whose sum is σ = 6432165282. Its totient is φ = 6432165280.

The previous prime is 6432165253. The next prime is 6432165301. The reversal of 6432165281 is 1825612346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6406561681 + 25603600 = 80041^2 + 5060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6432165281 is a prime.

It is a super-2 number, since 2×6432165281² = 82745500404203617922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6432165881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3216082640 + 3216082641.

It is an arithmetic number, because the mean of its divisors is an integer number (3216082641).

Almost surely, 2^6432165281 is an apocalyptic number.

It is an amenable number.

6432165281 is a deficient number, since it is larger than the sum of its proper divisors (1).

6432165281 is an equidigital number, since it uses as much as digits as its factorization.

6432165281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 38.

The square root of 6432165281 is about 80200.7810498127. The cubic root of 6432165281 is about 1859.7407124016.

The spelling of 6432165281 in words is "six billion, four hundred thirty-two million, one hundred sixty-five thousand, two hundred eighty-one".