744575217356443 has 4 divisors (see below), whose sum is σ = 812263873479768. Its totient is φ = 676886561233120.

The previous prime is 744575217356437. The next prime is 744575217356459. The reversal of 744575217356443 is 344653712575447.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-744575217356443 is a prime.

It is a super-2 number, since 2×744575217356443² (a number of 31 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744575217356483) 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, 33844328061646 + ... + 33844328061667.

It is an arithmetic number, because the mean of its divisors is an integer number (203065968369942).

Almost surely, 2^{744575217356443} is an apocalyptic number.

744575217356443 is a deficient number, since it is larger than the sum of its proper divisors (67688656123325).

744575217356443 is a wasteful number, since it uses less digits than its factorization.

744575217356443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67688656123324.

The product of its digits is 1185408000, while the sum is 67.

The spelling of 744575217356443 in words is "seven hundred forty-four trillion, five hundred seventy-five billion, two hundred seventeen million, three hundred fifty-six thousand, four hundred forty-three".