6403423355423 has 16 divisors (see below), whose sum is σ = 6507899354880. Its totient is φ = 6299617884864.

The previous prime is 6403423355339. The next prime is 6403423355453. The reversal of 6403423355423 is 3245533243046.

It is a cyclic number.

It is not a de Polignac number, because 6403423355423 - 2¹² = 6403423351327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6403423355453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53923808 + ... + 54042426.

It is an arithmetic number, because the mean of its divisors is an integer number (406743709680).

Almost surely, 2^{6403423355423} is an apocalyptic number.

6403423355423 is a deficient number, since it is larger than the sum of its proper divisors (104475999457).

6403423355423 is a wasteful number, since it uses less digits than its factorization.

6403423355423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121438.

The product of its (nonzero) digits is 3110400, while the sum is 44.

Adding to 6403423355423 its reverse (3245533243046), we get a palindrome (9648956598469).

The spelling of 6403423355423 in words is "six trillion, four hundred three billion, four hundred twenty-three million, three hundred fifty-five thousand, four hundred twenty-three".