6444153425431 has 6 divisors (see below), whose sum is σ = 6605161424696. Its totient is φ = 6286978950000.

The previous prime is 6444153425351. The next prime is 6444153425453. The reversal of 6444153425431 is 1345243514446.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-6444153425431 is a prime.

It is a super-2 number, since 2×6444153425431² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6444153425461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1916760195 + ... + 1916763556.

Almost surely, 2^{6444153425431} is an apocalyptic number.

6444153425431 is a deficient number, since it is larger than the sum of its proper divisors (161007999265).

6444153425431 is an equidigital number, since it uses as much as digits as its factorization.

6444153425431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3833523833 (or 3833523792 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 46.

Adding to 6444153425431 its reverse (1345243514446), we get a palindrome (7789396939877).

The spelling of 6444153425431 in words is "six trillion, four hundred forty-four billion, one hundred fifty-three million, four hundred twenty-five thousand, four hundred thirty-one".