128529212880 has 80 divisors (see below), whose sum is σ = 398483049024. Its totient is φ = 34270801920.

The previous prime is 128529212873. The next prime is 128529212921. The reversal of 128529212880 is 88212925821.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2815840 + ... + 2861120.

Almost surely, 2^128529212880 is an apocalyptic number.

128529212880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128529212880 is an abundant number, since it is smaller than the sum of its proper divisors (269953836144).

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

128529212880 is a wasteful number, since it uses less digits than its factorization.

128529212880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57124 (or 57118 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 48.

The spelling of 128529212880 in words is "one hundred twenty-eight billion, five hundred twenty-nine million, two hundred twelve thousand, eight hundred eighty".