744173607721 has 8 divisors (see below), whose sum is σ = 746562331584. Its totient is φ = 741785143440.

The previous prime is 744173607713. The next prime is 744173607731. The reversal of 744173607721 is 127706371447.

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

It is a cyclic number.

It is not a de Polignac number, because 744173607721 - 2³ = 744173607713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744173607731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6857716 + ... + 6965386.

It is an arithmetic number, because the mean of its divisors is an integer number (93320291448).

Almost surely, 2^744173607721 is an apocalyptic number.

It is an amenable number.

744173607721 is a deficient number, since it is larger than the sum of its proper divisors (2388723863).

744173607721 is a wasteful number, since it uses less digits than its factorization.

744173607721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129791.

The product of its (nonzero) digits is 1382976, while the sum is 49.

The spelling of 744173607721 in words is "seven hundred forty-four billion, one hundred seventy-three million, six hundred seven thousand, seven hundred twenty-one".