744872134302221 has 4 divisors (see below), whose sum is σ = 754300895496000. Its totient is φ = 735443373108444.

The previous prime is 744872134302181. The next prime is 744872134302229. The reversal of 744872134302221 is 122203431278447.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 744872134302221 - 2¹⁴ = 744872134285837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 744872134302221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744872134302229) 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, 4714380596771 + ... + 4714380596928.

It is an arithmetic number, because the mean of its divisors is an integer number (188575223874000).

Almost surely, 2^{744872134302221} is an apocalyptic number.

It is an amenable number.

744872134302221 is a deficient number, since it is larger than the sum of its proper divisors (9428761193779).

744872134302221 is an equidigital number, since it uses as much as digits as its factorization.

744872134302221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9428761193778.

The product of its (nonzero) digits is 3612672, while the sum is 50.

The spelling of 744872134302221 in words is "seven hundred forty-four trillion, eight hundred seventy-two billion, one hundred thirty-four million, three hundred two thousand, two hundred twenty-one".