128449376000 has 288 divisors, whose sum is σ = 352626595776. Its totient is φ = 46233600000.

The previous prime is 128449375993. The next prime is 128449376039. The reversal of 128449376000 is 673944821.

It is a Harshad number since it is a multiple of its sum of digits (44).

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 31 ways as a sum of consecutive naturals, for example, 35550194 + ... + 35553806.

It is an arithmetic number, because the mean of its divisors is an integer number (1224397902).

Almost surely, 2^128449376000 is an apocalyptic number.

128449376000 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 128449376000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176313297888).

128449376000 is an abundant number, since it is smaller than the sum of its proper divisors (224177219776).

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

128449376000 is a wasteful number, since it uses less digits than its factorization.

128449376000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3756 (or 3732 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 128449376000 in words is "one hundred twenty-eight billion, four hundred forty-nine million, three hundred seventy-six thousand".