2128491183168 has 392 divisors, whose sum is σ = 7264368300800. Its totient is φ = 605871083520.

The previous prime is 2128491183109. The next prime is 2128491183173. The reversal of 2128491183168 is 8613811948212.

2128491183168 is a `hidden beast` number, since 2 + 12 + 8 + 491 + 1 + 83 + 1 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 88494408 + ... + 88518456.

Almost surely, 2^{2128491183168} is an apocalyptic number.

2128491183168 is a gapful number since it is divisible by the number (28) 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 2128491183168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3632184150400).

2128491183168 is an abundant number, since it is smaller than the sum of its proper divisors (5135877117632).

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

2128491183168 is an equidigital number, since it uses as much as digits as its factorization.

2128491183168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24357 (or 24332 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 54.

The spelling of 2128491183168 in words is "two trillion, one hundred twenty-eight billion, four hundred ninety-one million, one hundred eighty-three thousand, one hundred sixty-eight".