4215423643 has 2 divisors, whose sum is σ = 4215423644. Its totient is φ = 4215423642.

The previous prime is 4215423631. The next prime is 4215423659. The reversal of 4215423643 is 3463245124.

4215423643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4215423643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4215423599 and 4215423608.

It is not a weakly prime, because it can be changed into another prime (4215423613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2107711821 + 2107711822.

It is an arithmetic number, because the mean of its divisors is an integer number (2107711822).

Almost surely, 2^4215423643 is an apocalyptic number.

4215423643 is a deficient number, since it is larger than the sum of its proper divisors (1).

4215423643 is an equidigital number, since it uses as much as digits as its factorization.

4215423643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 34.

The square root of 4215423643 is about 64926.2939262669. The cubic root of 4215423643 is about 1615.4012291838.

Adding to 4215423643 its reverse (3463245124), we get a palindrome (7678668767).

The spelling of 4215423643 in words is "four billion, two hundred fifteen million, four hundred twenty-three thousand, six hundred forty-three".