128206951168 has 72 divisors (see below), whose sum is σ = 270336987200. Its totient is φ = 60514366464.

The previous prime is 128206951139. The next prime is 128206951199. The reversal of 128206951168 is 861159602821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1329943 + ... + 1423081.

Almost surely, 2^128206951168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128206951168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135168493600).

128206951168 is an abundant number, since it is smaller than the sum of its proper divisors (142130036032).

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

128206951168 is an equidigital number, since it uses as much as digits as its factorization.

128206951168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93457 (or 93443 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 49.

The spelling of 128206951168 in words is "one hundred twenty-eight billion, two hundred six million, nine hundred fifty-one thousand, one hundred sixty-eight".