744644407243 has 4 divisors (see below), whose sum is σ = 812339353368. Its totient is φ = 676949461120.

The previous prime is 744644407229. The next prime is 744644407279. The reversal of 744644407243 is 342704446447.

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 744644407243 - 2⁵ = 744644407211 is a prime.

It is a super-2 number, since 2×744644407243² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744944407243) 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, 33847473046 + ... + 33847473067.

It is an arithmetic number, because the mean of its divisors is an integer number (203084838342).

Almost surely, 2^744644407243 is an apocalyptic number.

744644407243 is a deficient number, since it is larger than the sum of its proper divisors (67694946125).

744644407243 is a wasteful number, since it uses less digits than its factorization.

744644407243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67694946124.

The product of its (nonzero) digits is 7225344, while the sum is 49.

The spelling of 744644407243 in words is "seven hundred forty-four billion, six hundred forty-four million, four hundred seven thousand, two hundred forty-three".