128840554445 has 8 divisors (see below), whose sum is σ = 155289762144. Its totient is φ = 102618379024.

The previous prime is 128840554441. The next prime is 128840554463. The reversal of 128840554445 is 544455048821.

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 128840554445 - 2² = 128840554441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128840554393 and 128840554402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128840554441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56756819 + ... + 56759088.

It is an arithmetic number, because the mean of its divisors is an integer number (19411220268).

Almost surely, 2^128840554445 is an apocalyptic number.

It is an amenable number.

128840554445 is a deficient number, since it is larger than the sum of its proper divisors (26449207699).

128840554445 is a wasteful number, since it uses less digits than its factorization.

128840554445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113516139.

The product of its (nonzero) digits is 4096000, while the sum is 50.

The spelling of 128840554445 in words is "one hundred twenty-eight billion, eight hundred forty million, five hundred fifty-four thousand, four hundred forty-five".