128299382064 has 360 divisors, whose sum is σ = 453862855680. Its totient is φ = 33606316800.

The previous prime is 128299382017. The next prime is 128299382129. The reversal of 128299382064 is 460283992821.

It is a self number, because there is not a number n which added to its sum of digits gives 128299382064.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4140549 + ... + 4171419.

Almost surely, 2^128299382064 is an apocalyptic number.

128299382064 is a gapful number since it is divisible by the number (14) 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 128299382064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226931427840).

128299382064 is an abundant number, since it is smaller than the sum of its proper divisors (325563473616).

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

128299382064 is a wasteful number, since it uses less digits than its factorization.

128299382064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30949 (or 30933 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 128299382064 in words is "one hundred twenty-eight billion, two hundred ninety-nine million, three hundred eighty-two thousand, sixty-four".