128246056164 has 108 divisors (see below), whose sum is σ = 336953320704. Its totient is φ = 42707491056.

The previous prime is 128246056157. The next prime is 128246056187. The reversal of 128246056164 is 461650642821.

It is a happy number.

128246056164 is a `hidden beast` number, since 1 + 2 + 8 + 24 + 6 + 0 + 5 + 616 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (108).

It is a congruent number.

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 35 ways as a sum of consecutive naturals, for example, 40492909 + ... + 40496075.

Almost surely, 2^128246056164 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 128246056164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168476660352).

128246056164 is an abundant number, since it is smaller than the sum of its proper divisors (208707264540).

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

128246056164 is an equidigital number, since it uses as much as digits as its factorization.

128246056164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738 (or 4715 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

Adding to 128246056164 its reverse (461650642821), we get a palindrome (589896698985).

The spelling of 128246056164 in words is "one hundred twenty-eight billion, two hundred forty-six million, fifty-six thousand, one hundred sixty-four".