6543453423 has 16 divisors (see below), whose sum is σ = 9397213056. Its totient is φ = 4026104160.

The previous prime is 6543453407. The next prime is 6543453437. The reversal of 6543453423 is 3243543456.

It is not a de Polignac number, because 6543453423 - 2⁴ = 6543453407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543453023) 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, 398608 + ... + 414698.

It is an arithmetic number, because the mean of its divisors is an integer number (587325816).

Almost surely, 2^6543453423 is an apocalyptic number.

6543453423 is a deficient number, since it is larger than the sum of its proper divisors (2853759633).

6543453423 is a wasteful number, since it uses less digits than its factorization.

6543453423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26534.

The product of its digits is 518400, while the sum is 39.

The square root of 6543453423 is about 80891.6152824259. The cubic root of 6543453423 is about 1870.4050732954.

Adding to 6543453423 its reverse (3243543456), we get a palindrome (9786996879).

The spelling of 6543453423 in words is "six billion, five hundred forty-three million, four hundred fifty-three thousand, four hundred twenty-three".