128388036312 has 32 divisors (see below), whose sum is σ = 356633434800. Its totient is φ = 42796012032.

The previous prime is 128388036263. The next prime is 128388036319. The reversal of 128388036312 is 213630883821.

128388036312 is a `hidden beast` number, since 1 + 2 + 8 + 3 + 8 + 8 + 0 + 3 + 631 + 2 = 666.

It is a super-2 number, since 2×128388036312² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128388036319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297194313 + ... + 297194744.

Almost surely, 2^128388036312 is an apocalyptic number.

128388036312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128388036312 is an abundant number, since it is smaller than the sum of its proper divisors (228245398488).

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

128388036312 is a wasteful number, since it uses less digits than its factorization.

128388036312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594389072 (or 594389062 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 128388036312 in words is "one hundred twenty-eight billion, three hundred eighty-eight million, thirty-six thousand, three hundred twelve".