128331786241 has 8 divisors (see below), whose sum is σ = 135101584800. Its totient is φ = 121563537120.

The previous prime is 128331786211. The next prime is 128331786257. The reversal of 128331786241 is 142687133821.

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 128331786241 - 2²⁹ = 127794915329 is a prime.

It is a super-3 number, since 3×128331786241³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128331786191 and 128331786200.

It is not an unprimeable number, because it can be changed into a prime (128331786211) 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, 215380 + ... + 550501.

It is an arithmetic number, because the mean of its divisors is an integer number (16887698100).

Almost surely, 2^128331786241 is an apocalyptic number.

It is an amenable number.

128331786241 is a deficient number, since it is larger than the sum of its proper divisors (6769798559).

128331786241 is an equidigital number, since it uses as much as digits as its factorization.

128331786241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774719.

The product of its digits is 387072, while the sum is 46.

The spelling of 128331786241 in words is "one hundred twenty-eight billion, three hundred thirty-one million, seven hundred eighty-six thousand, two hundred forty-one".