128497810212 has 192 divisors, whose sum is σ = 354499461120. Its totient is φ = 40184812800.

The previous prime is 128497810201. The next prime is 128497810213. The reversal of 128497810212 is 212018794821.

128497810212 is a `hidden beast` number, since 128 + 497 + 8 + 10 + 21 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (128497810213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22371813 + ... + 22377555.

It is an arithmetic number, because the mean of its divisors is an integer number (1846351360).

Almost surely, 2^128497810212 is an apocalyptic number.

128497810212 is a gapful number since it is divisible by the number (12) 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 128497810212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177249730560).

128497810212 is an abundant number, since it is smaller than the sum of its proper divisors (226001650908).

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

128497810212 is a wasteful number, since it uses less digits than its factorization.

128497810212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5991 (or 5983 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The spelling of 128497810212 in words is "one hundred twenty-eight billion, four hundred ninety-seven million, eight hundred ten thousand, two hundred twelve".