6444342523 has 4 divisors (see below), whose sum is σ = 6521985288. Its totient is φ = 6366699760.

The previous prime is 6444342521. The next prime is 6444342551. The reversal of 6444342523 is 3252434446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6444342523 - 2¹ = 6444342521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6444342521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38821258 + ... + 38821423.

It is an arithmetic number, because the mean of its divisors is an integer number (1630496322).

Almost surely, 2^6444342523 is an apocalyptic number.

6444342523 is a deficient number, since it is larger than the sum of its proper divisors (77642765).

6444342523 is an equidigital number, since it uses as much as digits as its factorization.

6444342523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77642764.

The product of its digits is 276480, while the sum is 37.

The square root of 6444342523 is about 80276.6623807941. The cubic root of 6444342523 is about 1860.9135800873.

Adding to 6444342523 its reverse (3252434446), we get a palindrome (9696776969).

The spelling of 6444342523 in words is "six billion, four hundred forty-four million, three hundred forty-two thousand, five hundred twenty-three".