128218120700 has 108 divisors (see below), whose sum is σ = 292826440200. Its totient is φ = 48725128320.

The previous prime is 128218120577. The next prime is 128218120753. The reversal of 128218120700 is 7021812821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7873967 + ... + 7890233.

Almost surely, 2^128218120700 is an apocalyptic number.

128218120700 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 128218120700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146413220100).

128218120700 is an abundant number, since it is smaller than the sum of its proper divisors (164608319500).

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

128218120700 is a wasteful number, since it uses less digits than its factorization.

128218120700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16476 (or 16446 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 32.

The spelling of 128218120700 in words is "one hundred twenty-eight billion, two hundred eighteen million, one hundred twenty thousand, seven hundred".