789445644621121 has 8 divisors (see below), whose sum is σ = 789673683548384. Its totient is φ = 789217609602240.

The previous prime is 789445644621077. The next prime is 789445644621167. The reversal of 789445644621121 is 121126446544987.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-789445644621121 is a prime.

It is a super-2 number, since 2×789445644621121² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (789445644621181) 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, 430522606 + ... + 432352408.

It is an arithmetic number, because the mean of its divisors is an integer number (98709210443548).

Almost surely, 2^{789445644621121} is an apocalyptic number.

It is an amenable number.

789445644621121 is a deficient number, since it is larger than the sum of its proper divisors (228038927263).

789445644621121 is a wasteful number, since it uses less digits than its factorization.

789445644621121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954191.

The product of its digits is 92897280, while the sum is 64.

The spelling of 789445644621121 in words is "seven hundred eighty-nine trillion, four hundred forty-five billion, six hundred forty-four million, six hundred twenty-one thousand, one hundred twenty-one".