128860380600 has 384 divisors, whose sum is σ = 473273280000. Its totient is φ = 28378183680.

The previous prime is 128860380559. The next prime is 128860380617. The reversal of 128860380600 is 6083068821.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 83188626 + ... + 83190174.

It is an arithmetic number, because the mean of its divisors is an integer number (1232482500).

Almost surely, 2^128860380600 is an apocalyptic number.

128860380600 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 128860380600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236636640000).

128860380600 is an abundant number, since it is smaller than the sum of its proper divisors (344412899400).

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

128860380600 is a wasteful number, since it uses less digits than its factorization.

128860380600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287 (or 2278 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 128860380600 in words is "one hundred twenty-eight billion, eight hundred sixty million, three hundred eighty thousand, six hundred".