128600813064 has 64 divisors (see below), whose sum is σ = 328654448640. Its totient is φ = 41915016000.

The previous prime is 128600812961. The next prime is 128600813147. The reversal of 128600813064 is 460318006821.

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, 1145439 + ... + 1252689.

It is an arithmetic number, because the mean of its divisors is an integer number (5135225760).

Almost surely, 2^128600813064 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 128600813064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164327224320).

128600813064 is an abundant number, since it is smaller than the sum of its proper divisors (200053635576).

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

128600813064 is a wasteful number, since it uses less digits than its factorization.

128600813064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108370 (or 108366 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

Adding to 128600813064 its reverse (460318006821), we get a palindrome (588918819885).

The spelling of 128600813064 in words is "one hundred twenty-eight billion, six hundred million, eight hundred thirteen thousand, sixty-four".