128811872098 has 32 divisors (see below), whose sum is σ = 243606706560. Its totient is φ = 49715648640.

The previous prime is 128811872081. The next prime is 128811872107. The reversal of 128811872098 is 890278118821.

It is a happy number.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8623728 + ... + 8638651.

It is an arithmetic number, because the mean of its divisors is an integer number (7612709580).

Almost surely, 2^128811872098 is an apocalyptic number.

128811872098 is a deficient number, since it is larger than the sum of its proper divisors (114794834462).

128811872098 is a wasteful number, since it uses less digits than its factorization.

128811872098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17262442.

The product of its (nonzero) digits is 1032192, while the sum is 55.

The spelling of 128811872098 in words is "one hundred twenty-eight billion, eight hundred eleven million, eight hundred seventy-two thousand, ninety-eight".