8423434343237 has 2 divisors, whose sum is σ = 8423434343238. Its totient is φ = 8423434343236.

The previous prime is 8423434343231. The next prime is 8423434343381. The reversal of 8423434343237 is 7323434343248.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6919772258116 + 1503662085121 = 2630546^2 + 1226239^2 .

It is a cyclic number.

It is not a de Polignac number, because 8423434343237 - 2²² = 8423430148933 is a prime.

It is a super-2 number, since 2×8423434343237² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8423434343231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4211717171618 + 4211717171619.

It is an arithmetic number, because the mean of its divisors is an integer number (4211717171619).

Almost surely, 2^{8423434343237} is an apocalyptic number.

It is an amenable number.

8423434343237 is a deficient number, since it is larger than the sum of its proper divisors (1).

8423434343237 is an equidigital number, since it uses as much as digits as its factorization.

8423434343237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13934592, while the sum is 50.

The spelling of 8423434343237 in words is "eight trillion, four hundred twenty-three billion, four hundred thirty-four million, three hundred forty-three thousand, two hundred thirty-seven".