12318727642 has 16 divisors (see below), whose sum is σ = 20764679040. Its totient is φ = 5438367792.

The previous prime is 12318727639. The next prime is 12318727643. The reversal of 12318727642 is 24672781321.

It is not an unprimeable number, because it can be changed into a prime (12318727643) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10299342 + ... + 10300537.

It is an arithmetic number, because the mean of its divisors is an integer number (1297792440).

Almost surely, 2^12318727642 is an apocalyptic number.

12318727642 is a deficient number, since it is larger than the sum of its proper divisors (8445951398).

12318727642 is a wasteful number, since it uses less digits than its factorization.

12318727642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20599917.

The product of its digits is 225792, while the sum is 43.

The spelling of 12318727642 in words is "twelve billion, three hundred eighteen million, seven hundred twenty-seven thousand, six hundred forty-two".