6544384134923 has 4 divisors (see below), whose sum is σ = 6544451355000. Its totient is φ = 6544316914848.

The previous prime is 6544384134913. The next prime is 6544384134949. The reversal of 6544384134923 is 3294314834456.

It is a happy number.

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 6544384134923 - 2⁸ = 6544384134667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6544384134913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33463790 + ... + 33658787.

It is an arithmetic number, because the mean of its divisors is an integer number (1636112838750).

Almost surely, 2^{6544384134923} is an apocalyptic number.

6544384134923 is a deficient number, since it is larger than the sum of its proper divisors (67220077).

6544384134923 is an equidigital number, since it uses as much as digits as its factorization.

6544384134923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67220076.

The product of its digits is 29859840, while the sum is 56.

The spelling of 6544384134923 in words is "six trillion, five hundred forty-four billion, three hundred eighty-four million, one hundred thirty-four thousand, nine hundred twenty-three".