789077885121 has 12 divisors (see below), whose sum is σ = 1139790301780. Its totient is φ = 526046784480.

The previous prime is 789077885087. The next prime is 789077885159. The reversal of 789077885121 is 121588770987.

It can be written as a sum of positive squares in 2 ways, for example, as 429239866896 + 359838018225 = 655164^2 + 599865^2 .

It is not a de Polignac number, because 789077885121 - 2¹¹ = 789077883073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (789077885191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 700935 + ... + 1438563.

Almost surely, 2^789077885121 is an apocalyptic number.

It is an amenable number.

789077885121 is a deficient number, since it is larger than the sum of its proper divisors (350712416659).

789077885121 is a wasteful number, since it uses less digits than its factorization.

789077885121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856496 (or 856493 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 63.

The spelling of 789077885121 in words is "seven hundred eighty-nine billion, seventy-seven million, eight hundred eighty-five thousand, one hundred twenty-one".