12086428128 has 48 divisors (see below), whose sum is σ = 32109146496. Its totient is φ = 3980266880.

The previous prime is 12086428127. The next prime is 12086428141. The reversal of 12086428128 is 82182468021.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 12086428128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12086428127) 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, 750468 + ... + 766403.

It is an arithmetic number, because the mean of its divisors is an integer number (668940552).

Almost surely, 2^12086428128 is an apocalyptic number.

It is an amenable number.

12086428128 is an abundant number, since it is smaller than the sum of its proper divisors (20022718368).

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

12086428128 is a wasteful number, since it uses less digits than its factorization.

12086428128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516967 (or 1516959 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 42.

The spelling of 12086428128 in words is "twelve billion, eighty-six million, four hundred twenty-eight thousand, one hundred twenty-eight".