6423144321 has 16 divisors (see below), whose sum is σ = 9344207808. Its totient is φ = 3892209600.

The previous prime is 6423144317. The next prime is 6423144347. The reversal of 6423144321 is 1234413246.

It is not a de Polignac number, because 6423144321 - 2² = 6423144317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6423144361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295651 + ... + 316631.

It is an arithmetic number, because the mean of its divisors is an integer number (584012988).

Almost surely, 2^6423144321 is an apocalyptic number.

It is an amenable number.

6423144321 is a deficient number, since it is larger than the sum of its proper divisors (2921063487).

6423144321 is a wasteful number, since it uses less digits than its factorization.

6423144321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30272.

The product of its digits is 13824, while the sum is 30.

The square root of 6423144321 is about 80144.5214659118. The cubic root of 6423144321 is about 1858.8708914880.

Adding to 6423144321 its reverse (1234413246), we get a palindrome (7657557567).

The spelling of 6423144321 in words is "six billion, four hundred twenty-three million, one hundred forty-four thousand, three hundred twenty-one".