12138723462 has 8 divisors (see below), whose sum is σ = 24277446936. Its totient is φ = 4046241152.

The previous prime is 12138723461. The next prime is 12138723521. The reversal of 12138723462 is 26432783121.

It is a sphenic number, since it is the product of 3 distinct primes.

12138723462 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 12138723462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12138723461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1011560283 + ... + 1011560294.

It is an arithmetic number, because the mean of its divisors is an integer number (3034680867).

Almost surely, 2^12138723462 is an apocalyptic number.

12138723462 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12138723462 is a wasteful number, since it uses less digits than its factorization.

12138723462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023120582.

The product of its digits is 96768, while the sum is 39.

The spelling of 12138723462 in words is "twelve billion, one hundred thirty-eight million, seven hundred twenty-three thousand, four hundred sixty-two".