128786111000 has 32 divisors (see below), whose sum is σ = 301359502080. Its totient is φ = 51514444000.

The previous prime is 128786110963. The next prime is 128786111009. The reversal of 128786111000 is 111687821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128786111009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64392056 + ... + 64394055.

It is an arithmetic number, because the mean of its divisors is an integer number (9417484440).

Almost surely, 2^128786111000 is an apocalyptic number.

128786111000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128786111000 is an abundant number, since it is smaller than the sum of its proper divisors (172573391080).

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

128786111000 is a wasteful number, since it uses less digits than its factorization.

128786111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128786132 (or 128786118 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 35.

Adding to 128786111000 its reverse (111687821), we get a palindrome (128897798821).

The spelling of 128786111000 in words is "one hundred twenty-eight billion, seven hundred eighty-six million, one hundred eleven thousand".