128251426377800 has 48 divisors (see below), whose sum is σ = 325292254182000. Its totient is φ = 46636882318400.

The previous prime is 128251426377757. The next prime is 128251426377869. The reversal of 128251426377800 is 8773624152821.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29148049250 + ... + 29148053649.

It is an arithmetic number, because the mean of its divisors is an integer number (6776921962125).

Almost surely, 2^{128251426377800} is an apocalyptic number.

128251426377800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128251426377800 is an abundant number, since it is smaller than the sum of its proper divisors (197040827804200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128251426377800 is a wasteful number, since it uses less digits than its factorization.

128251426377800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58296102926 (or 58296102917 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 56.

The spelling of 128251426377800 in words is "one hundred twenty-eight trillion, two hundred fifty-one billion, four hundred twenty-six million, three hundred seventy-seven thousand, eight hundred".