128340127512 has 64 divisors (see below), whose sum is σ = 372000384000. Its totient is φ = 40920039072.

The previous prime is 128340127511. The next prime is 128340127519. The reversal of 128340127512 is 215721043821.

128340127512 is a `hidden beast` number, since 1 + 2 + 83 + 40 + 1 + 27 + 512 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128340127511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12911712 + ... + 12921647.

It is an arithmetic number, because the mean of its divisors is an integer number (5812506000).

Almost surely, 2^128340127512 is an apocalyptic number.

128340127512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128340127512 is an abundant number, since it is smaller than the sum of its proper divisors (243660256488).

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

128340127512 is a wasteful number, since it uses less digits than its factorization.

128340127512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25833397 (or 25833387 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The spelling of 128340127512 in words is "one hundred twenty-eight billion, three hundred forty million, one hundred twenty-seven thousand, five hundred twelve".