128251016841 has 16 divisors (see below), whose sum is σ = 182585880576. Its totient is φ = 79881319056.

The previous prime is 128251016819. The next prime is 128251016851. The reversal of 128251016841 is 148610152821.

It is not a de Polignac number, because 128251016841 - 2⁷ = 128251016713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128251016841.

It is not an unprimeable number, because it can be changed into a prime (128251016801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21609945 + ... + 21615878.

It is an arithmetic number, because the mean of its divisors is an integer number (11411617536).

Almost surely, 2^128251016841 is an apocalyptic number.

It is an amenable number.

128251016841 is a deficient number, since it is larger than the sum of its proper divisors (54334863735).

128251016841 is a wasteful number, since it uses less digits than its factorization.

128251016841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43225892.

The product of its (nonzero) digits is 30720, while the sum is 39.

The spelling of 128251016841 in words is "one hundred twenty-eight billion, two hundred fifty-one million, sixteen thousand, eight hundred forty-one".