128170399610200 has 144 divisors (see below), whose sum is σ = 314520640406280. Its totient is φ = 48567522654720.

The previous prime is 128170399610177. The next prime is 128170399610317. The reversal of 128170399610200 is 2016993071821.

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, 2806607767 + ... + 2806653433.

Almost surely, 2^{128170399610200} is an apocalyptic number.

128170399610200 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 128170399610200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157260320203140).

128170399610200 is an abundant number, since it is smaller than the sum of its proper divisors (186350240796080).

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

128170399610200 is a wasteful number, since it uses less digits than its factorization.

128170399610200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84594 (or 84566 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 128170399610200 in words is "one hundred twenty-eight trillion, one hundred seventy billion, three hundred ninety-nine million, six hundred ten thousand, two hundred".