6544145231 has 8 divisors (see below), whose sum is σ = 7058212224. Its totient is φ = 6031602720.

The previous prime is 6544145227. The next prime is 6544145233. The reversal of 6544145231 is 1325414456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6544145231 - 2² = 6544145227 is a prime.

It is a super-2 number, since 2×6544145231² = 85651673608840086722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6544145191 and 6544145200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6544145233) 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 7 ways as a sum of consecutive naturals, for example, 372191 + ... + 389376.

It is an arithmetic number, because the mean of its divisors is an integer number (882276528).

Almost surely, 2^6544145231 is an apocalyptic number.

6544145231 is a deficient number, since it is larger than the sum of its proper divisors (514066993).

6544145231 is a wasteful number, since it uses less digits than its factorization.

6544145231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762241.

The product of its digits is 57600, while the sum is 35.

The square root of 6544145231 is about 80895.8913109930. The cubic root of 6544145231 is about 1870.4709872968.

Adding to 6544145231 its reverse (1325414456), we get a palindrome (7869559687).

The spelling of 6544145231 in words is "six billion, five hundred forty-four million, one hundred forty-five thousand, two hundred thirty-one".