427433518637 has 2 divisors, whose sum is σ = 427433518638. Its totient is φ = 427433518636.

The previous prime is 427433518619. The next prime is 427433518691. The reversal of 427433518637 is 736815334724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 377412406921 + 50021111716 = 614339^2 + 223654^2 .

It is a cyclic number.

It is not a de Polignac number, because 427433518637 - 2⁶ = 427433518573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427433518697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213716759318 + 213716759319.

It is an arithmetic number, because the mean of its divisors is an integer number (213716759319).

Almost surely, 2^427433518637 is an apocalyptic number.

It is an amenable number.

427433518637 is a deficient number, since it is larger than the sum of its proper divisors (1).

427433518637 is an equidigital number, since it uses as much as digits as its factorization.

427433518637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 53.

The spelling of 427433518637 in words is "four hundred twenty-seven billion, four hundred thirty-three million, five hundred eighteen thousand, six hundred thirty-seven".