427449366637 has 2 divisors, whose sum is σ = 427449366638. Its totient is φ = 427449366636.

The previous prime is 427449366623. The next prime is 427449366649. The reversal of 427449366637 is 736663944724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403759847241 + 23689519396 = 635421^2 + 153914^2 .

It is a cyclic number.

It is not a de Polignac number, because 427449366637 - 2¹⁹ = 427448842349 is a prime.

It is a super-2 number, since 2×427449366637² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427449366607) 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, 213724683318 + 213724683319.

It is an arithmetic number, because the mean of its divisors is an integer number (213724683319).

Almost surely, 2^427449366637 is an apocalyptic number.

It is an amenable number.

427449366637 is a deficient number, since it is larger than the sum of its proper divisors (1).

427449366637 is an equidigital number, since it uses as much as digits as its factorization.

427449366637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109734912, while the sum is 61.

The spelling of 427449366637 in words is "four hundred twenty-seven billion, four hundred forty-nine million, three hundred sixty-six thousand, six hundred thirty-seven".