128681045855 has 4 divisors (see below), whose sum is σ = 154417255032. Its totient is φ = 102944836680.

The previous prime is 128681045839. The next prime is 128681045873. The reversal of 128681045855 is 558540186821.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 128681045855 - 2⁴ = 128681045839 is a prime.

It is a super-2 number, since 2×128681045855² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128681045797 and 128681045806.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12868104581 + ... + 12868104590.

It is an arithmetic number, because the mean of its divisors is an integer number (38604313758).

Almost surely, 2^128681045855 is an apocalyptic number.

128681045855 is a deficient number, since it is larger than the sum of its proper divisors (25736209177).

128681045855 is an equidigital number, since it uses as much as digits as its factorization.

128681045855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25736209176.

The product of its (nonzero) digits is 3072000, while the sum is 53.

The spelling of 128681045855 in words is "one hundred twenty-eight billion, six hundred eighty-one million, forty-five thousand, eight hundred fifty-five".