128749514200 has 96 divisors (see below), whose sum is σ = 309393925200. Its totient is φ = 49788311040.

The previous prime is 128749514197. The next prime is 128749514203. The reversal of 128749514200 is 2415947821.

It is an interprime number because it is at equal distance from previous prime (128749514197) and next prime (128749514203).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128749514203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1106391 + ... + 1217209.

Almost surely, 2^128749514200 is an apocalyptic number.

128749514200 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 128749514200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154696962600).

128749514200 is an abundant number, since it is smaller than the sum of its proper divisors (180644411000).

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

128749514200 is a wasteful number, since it uses less digits than its factorization.

128749514200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111029 (or 111020 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 128749514200 in words is "one hundred twenty-eight billion, seven hundred forty-nine million, five hundred fourteen thousand, two hundred".