128444108880 has 160 divisors (see below), whose sum is σ = 404774092800. Its totient is φ = 33688866816.

The previous prime is 128444108867. The next prime is 128444108917. The reversal of 128444108880 is 88801444821.

It is a happy number.

It is a Cunningham number, because it is equal to 358391²-1.

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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3566001 + ... + 3601839.

It is an arithmetic number, because the mean of its divisors is an integer number (2529838080).

Almost surely, 2^128444108880 is an apocalyptic number.

128444108880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128444108880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202387046400).

128444108880 is an abundant number, since it is smaller than the sum of its proper divisors (276329983920).

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

128444108880 is a wasteful number, since it uses less digits than its factorization.

128444108880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36101 (or 36095 counting only the distinct ones).

The product of its (nonzero) digits is 524288, while the sum is 48.

The spelling of 128444108880 in words is "one hundred twenty-eight billion, four hundred forty-four million, one hundred eight thousand, eight hundred eighty".