128181842115 has 32 divisors (see below), whose sum is σ = 205833623040. Its totient is φ = 68116413696.

The previous prime is 128181842101. The next prime is 128181842143. The reversal of 128181842115 is 511248181821.

It is not a de Polignac number, because 128181842115 - 2⁴ = 128181842099 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6899679 + ... + 6918231.

It is an arithmetic number, because the mean of its divisors is an integer number (6432300720).

Almost surely, 2^128181842115 is an apocalyptic number.

128181842115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128181842115 is a deficient number, since it is larger than the sum of its proper divisors (77651780925).

128181842115 is a wasteful number, since it uses less digits than its factorization.

128181842115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20203.

The product of its digits is 40960, while the sum is 42.

The spelling of 128181842115 in words is "one hundred twenty-eight billion, one hundred eighty-one million, eight hundred forty-two thousand, one hundred fifteen".