646411132163 has 2 divisors, whose sum is σ = 646411132164. Its totient is φ = 646411132162.

The previous prime is 646411132139. The next prime is 646411132183. The reversal of 646411132163 is 361231114646.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 646411132163 - 2¹² = 646411128067 is a prime.

It is not a weakly prime, because it can be changed into another prime (646411132123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323205566081 + 323205566082.

It is an arithmetic number, because the mean of its divisors is an integer number (323205566082).

Almost surely, 2^646411132163 is an apocalyptic number.

646411132163 is a deficient number, since it is larger than the sum of its proper divisors (1).

646411132163 is an equidigital number, since it uses as much as digits as its factorization.

646411132163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The spelling of 646411132163 in words is "six hundred forty-six billion, four hundred eleven million, one hundred thirty-two thousand, one hundred sixty-three".