744804910021 has 8 divisors (see below), whose sum is σ = 771952526840. Its totient is φ = 718026648768.

The previous prime is 744804910019. The next prime is 744804910049. The reversal of 744804910021 is 120019408447.

744804910021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 130949896900 + 613855013121 = 361870^2 + 783489^2 .

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 744804910021 - 2¹ = 744804910019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744804910321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92334786 + ... + 92342851.

It is an arithmetic number, because the mean of its divisors is an integer number (96494065855).

Almost surely, 2^744804910021 is an apocalyptic number.

It is an amenable number.

744804910021 is a deficient number, since it is larger than the sum of its proper divisors (27147616819).

744804910021 is a wasteful number, since it uses less digits than its factorization.

744804910021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184677783.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 744804910021 in words is "seven hundred forty-four billion, eight hundred four million, nine hundred ten thousand, twenty-one".