12786928132 has 18 divisors (see below), whose sum is σ = 24596344094. Its totient is φ = 5812239840.

The previous prime is 12786928129. The next prime is 12786928151. The reversal of 12786928132 is 23182968721.

It can be written as a sum of positive squares in only one way, i.e., 12235899456 + 551028676 = 110616^2 + 23474^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13209153 + ... + 13210120.

Almost surely, 2^12786928132 is an apocalyptic number.

It is an amenable number.

12786928132 is a deficient number, since it is larger than the sum of its proper divisors (11809415962).

12786928132 is a wasteful number, since it uses less digits than its factorization.

12786928132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26419299 (or 26419286 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The spelling of 12786928132 in words is "twelve billion, seven hundred eighty-six million, nine hundred twenty-eight thousand, one hundred thirty-two".