451643346163 has 2 divisors, whose sum is σ = 451643346164. Its totient is φ = 451643346162.

The previous prime is 451643346109. The next prime is 451643346197. The reversal of 451643346163 is 361643346154.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 451643346163 - 2¹⁷ = 451643215091 is a prime.

It is a super-2 number, since 2×451643346163² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (451643346463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225821673081 + 225821673082.

It is an arithmetic number, because the mean of its divisors is an integer number (225821673082).

Almost surely, 2^451643346163 is an apocalyptic number.

451643346163 is a deficient number, since it is larger than the sum of its proper divisors (1).

451643346163 is an equidigital number, since it uses as much as digits as its factorization.

451643346163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 46.

Subtracting from 451643346163 its reverse (361643346154), we obtain a palindrome (90000000009).

The spelling of 451643346163 in words is "four hundred fifty-one billion, six hundred forty-three million, three hundred forty-six thousand, one hundred sixty-three".