6344431744489 has 16 divisors (see below), whose sum is σ = 6446247005440. Its totient is φ = 6243444567360.

The previous prime is 6344431744487. The next prime is 6344431744493. The reversal of 6344431744489 is 9844471344436.

It is a cyclic number.

It is not a de Polignac number, because 6344431744489 - 2¹ = 6344431744487 is a prime.

It is a super-2 number, since 2×6344431744489² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6344431744487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39467932 + ... + 39628354.

It is an arithmetic number, because the mean of its divisors is an integer number (402890437840).

Almost surely, 2^{6344431744489} is an apocalyptic number.

It is an amenable number.

6344431744489 is a deficient number, since it is larger than the sum of its proper divisors (101815260951).

6344431744489 is a wasteful number, since it uses less digits than its factorization.

6344431744489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163000.

The product of its digits is 111476736, while the sum is 61.

The spelling of 6344431744489 in words is "six trillion, three hundred forty-four billion, four hundred thirty-one million, seven hundred forty-four thousand, four hundred eighty-nine".