12308236128 has 36 divisors (see below), whose sum is σ = 35001547308. Its totient is φ = 4102745280.

The previous prime is 12308236069. The next prime is 12308236133. The reversal of 12308236128 is 82163280321.

12308236128 is a `hidden beast` number, since 1 + 2 + 30 + 8 + 2 + 3 + 612 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 12308236092 and 12308236101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21368178 + ... + 21368753.

It is an arithmetic number, because the mean of its divisors is an integer number (972265203).

Almost surely, 2^12308236128 is an apocalyptic number.

12308236128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12308236128 is an abundant number, since it is smaller than the sum of its proper divisors (22693311180).

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

12308236128 is a wasteful number, since it uses less digits than its factorization.

12308236128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42736947 (or 42736936 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 12308236128 in words is "twelve billion, three hundred eight million, two hundred thirty-six thousand, one hundred twenty-eight".