128819526380880 has 80 divisors (see below), whose sum is σ = 399704562252864. Its totient is φ = 34320559252480.

The previous prime is 128819526380851. The next prime is 128819526380917. The reversal of 128819526380880 is 88083625918821.

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

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, 244380306 + ... + 244906865.

Almost surely, 2^{128819526380880} is an apocalyptic number.

128819526380880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128819526380880 is an abundant number, since it is smaller than the sum of its proper divisors (270885035871984).

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

128819526380880 is a wasteful number, since it uses less digits than its factorization.

128819526380880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489288284 (or 489288278 counting only the distinct ones).

The product of its (nonzero) digits is 106168320, while the sum is 69.

The spelling of 128819526380880 in words is "one hundred twenty-eight trillion, eight hundred nineteen billion, five hundred twenty-six million, three hundred eighty thousand, eight hundred eighty".