12573722138 has 32 divisors (see below), whose sum is σ = 20287024128. Its totient is φ = 5823417600.

The previous prime is 12573722129. The next prime is 12573722143. The reversal of 12573722138 is 83122737521.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12573722095 and 12573722104.

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, 1461008 + ... + 1469588.

It is an arithmetic number, because the mean of its divisors is an integer number (633969504).

Almost surely, 2^12573722138 is an apocalyptic number.

12573722138 is a deficient number, since it is larger than the sum of its proper divisors (7713301990).

12573722138 is a wasteful number, since it uses less digits than its factorization.

12573722138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9278.

The product of its digits is 141120, while the sum is 41.

The spelling of 12573722138 in words is "twelve billion, five hundred seventy-three million, seven hundred twenty-two thousand, one hundred thirty-eight".