402441006637 has 2 divisors, whose sum is σ = 402441006638. Its totient is φ = 402441006636.

The previous prime is 402441006601. The next prime is 402441006683. The reversal of 402441006637 is 736600144204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 398708896356 + 3732110281 = 631434^2 + 61091^2 .

It is a cyclic number.

It is not a de Polignac number, because 402441006637 - 2⁷ = 402441006509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402441006596 and 402441006605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402441006437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201220503318 + 201220503319.

It is an arithmetic number, because the mean of its divisors is an integer number (201220503319).

Almost surely, 2^402441006637 is an apocalyptic number.

It is an amenable number.

402441006637 is a deficient number, since it is larger than the sum of its proper divisors (1).

402441006637 is an equidigital number, since it uses as much as digits as its factorization.

402441006637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 37.

The spelling of 402441006637 in words is "four hundred two billion, four hundred forty-one million, six thousand, six hundred thirty-seven".