12438645674 has 16 divisors (see below), whose sum is σ = 22963653888. Its totient is φ = 4920782832.

The previous prime is 12438645673. The next prime is 12438645691. The reversal of 12438645674 is 47654683421.

It is not an unprimeable number, because it can be changed into a prime (12438645671) 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, 34171922 + ... + 34172285.

It is an arithmetic number, because the mean of its divisors is an integer number (1435228368).

Almost surely, 2^12438645674 is an apocalyptic number.

12438645674 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12438645674 is a deficient number, since it is larger than the sum of its proper divisors (10525008214).

12438645674 is a wasteful number, since it uses less digits than its factorization.

12438645674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68344229.

The product of its digits is 3870720, while the sum is 50.

The spelling of 12438645674 in words is "twelve billion, four hundred thirty-eight million, six hundred forty-five thousand, six hundred seventy-four".