128251673186720 has 96 divisors (see below), whose sum is σ = 311960249503056. Its totient is φ = 49795374899200.

The previous prime is 128251673186699. The next prime is 128251673186783. The reversal of 128251673186720 is 27681376152821.

It can be written as a sum of positive squares in 8 ways, for example, as 37071098668816 + 91180574517904 = 6088604^2 + 9548852^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 128251673186720.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48328391 + ... + 50913030.

Almost surely, 2^{128251673186720} is an apocalyptic number.

128251673186720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128251673186720 is an abundant number, since it is smaller than the sum of its proper divisors (183708576316336).

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

128251673186720 is a wasteful number, since it uses less digits than its factorization.

128251673186720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99241674 (or 99241666 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 59.

The spelling of 128251673186720 in words is "one hundred twenty-eight trillion, two hundred fifty-one billion, six hundred seventy-three million, one hundred eighty-six thousand, seven hundred twenty".