128351884540780 has 96 divisors (see below), whose sum is σ = 292681683201600. Its totient is φ = 47091853885440.

The previous prime is 128351884540753. The next prime is 128351884540811. The reversal of 128351884540780 is 87045488153821.

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, 3212011 + ... + 16340770.

It is an arithmetic number, because the mean of its divisors is an integer number (3048767533350).

Almost surely, 2^{128351884540780} is an apocalyptic number.

128351884540780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128351884540780 is an abundant number, since it is smaller than the sum of its proper divisors (164329798660820).

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

128351884540780 is a wasteful number, since it uses less digits than its factorization.

128351884540780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19553299 (or 19553297 counting only the distinct ones).

The product of its (nonzero) digits is 68812800, while the sum is 64.

The spelling of 128351884540780 in words is "one hundred twenty-eight trillion, three hundred fifty-one billion, eight hundred eighty-four million, five hundred forty thousand, seven hundred eighty".