128252642626812 has 96 divisors (see below), whose sum is σ = 327701857593600. Its totient is φ = 38716772224000.

The previous prime is 128252642626807. The next prime is 128252642626819. The reversal of 128252642626812 is 218626246252821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128252642626819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 450418687 + ... + 450703337.

It is an arithmetic number, because the mean of its divisors is an integer number (3413561016600).

Almost surely, 2^{128252642626812} is an apocalyptic number.

128252642626812 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 128252642626812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163850928796800).

128252642626812 is an abundant number, since it is smaller than the sum of its proper divisors (199449214966788).

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

128252642626812 is a wasteful number, since it uses less digits than its factorization.

128252642626812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297627 (or 297625 counting only the distinct ones).

The product of its digits is 17694720, while the sum is 57.

The spelling of 128252642626812 in words is "one hundred twenty-eight trillion, two hundred fifty-two billion, six hundred forty-two million, six hundred twenty-six thousand, eight hundred twelve".