128008992448 has 112 divisors (see below), whose sum is σ = 273442176000. Its totient is φ = 59266252800.

The previous prime is 128008992409. The next prime is 128008992473. The reversal of 128008992448 is 844299800821.

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, 79954848 + ... + 79956448.

It is an arithmetic number, because the mean of its divisors is an integer number (2441448000).

Almost surely, 2^128008992448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128008992448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136721088000).

128008992448 is an abundant number, since it is smaller than the sum of its proper divisors (145433183552).

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

128008992448 is a wasteful number, since it uses less digits than its factorization.

128008992448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3078 (or 3068 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 55.

The spelling of 128008992448 in words is "one hundred twenty-eight billion, eight million, nine hundred ninety-two thousand, four hundred forty-eight".