128228898112512 has 44 divisors (see below), whose sum is σ = 341776763597136. Its totient is φ = 42742966036480.

The previous prime is 128228898112507. The next prime is 128228898112529. The reversal of 128228898112512 is 215211898822821.

It is a happy number.

It is a super-2 number, since 2×128228898112512² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20870585814 + ... + 20870591957.

Almost surely, 2^{128228898112512} is an apocalyptic number.

128228898112512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128228898112512 is an abundant number, since it is smaller than the sum of its proper divisors (213547865484624).

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

128228898112512 is an equidigital number, since it uses as much as digits as its factorization.

128228898112512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41741177794 (or 41741177776 counting only the distinct ones).

The product of its digits is 5898240, while the sum is 60.

The spelling of 128228898112512 in words is "one hundred twenty-eight trillion, two hundred twenty-eight billion, eight hundred ninety-eight million, one hundred twelve thousand, five hundred twelve".