451643633369897 has 2 divisors, whose sum is σ = 451643633369898. Its totient is φ = 451643633369896.

The previous prime is 451643633369893. The next prime is 451643633369911. The reversal of 451643633369897 is 798963336346154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 450973684571881 + 669948798016 = 21236141^2 + 818504^2 .

It is a cyclic number.

It is not a de Polignac number, because 451643633369897 - 2² = 451643633369893 is a prime.

It is not a weakly prime, because it can be changed into another prime (451643633369893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225821816684948 + 225821816684949.

It is an arithmetic number, because the mean of its divisors is an integer number (225821816684949).

Almost surely, 2^{451643633369897} is an apocalyptic number.

It is an amenable number.

451643633369897 is a deficient number, since it is larger than the sum of its proper divisors (1).

451643633369897 is an equidigital number, since it uses as much as digits as its factorization.

451643633369897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6348948480, while the sum is 77.

The spelling of 451643633369897 in words is "four hundred fifty-one trillion, six hundred forty-three billion, six hundred thirty-three million, three hundred sixty-nine thousand, eight hundred ninety-seven".