12645214128 has 80 divisors (see below), whose sum is σ = 37277480160. Its totient is φ = 4101145344.

The previous prime is 12645214069. The next prime is 12645214133. The reversal of 12645214128 is 82141254621.

12645214128 is a `hidden beast` number, since 1 + 2 + 6 + 4 + 521 + 4 + 128 = 666.

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 = 12645214092 and 12645214101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379575 + ... + 411542.

It is an arithmetic number, because the mean of its divisors is an integer number (465968502).

Almost surely, 2^12645214128 is an apocalyptic number.

12645214128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12645214128 is an abundant number, since it is smaller than the sum of its proper divisors (24632266032).

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

12645214128 is a wasteful number, since it uses less digits than its factorization.

12645214128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791171 (or 791159 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

Adding to 12645214128 its reverse (82141254621), we get a palindrome (94786468749).

The spelling of 12645214128 in words is "twelve billion, six hundred forty-five million, two hundred fourteen thousand, one hundred twenty-eight".