12138723374 has 4 divisors (see below), whose sum is σ = 18208085064. Its totient is φ = 6069361686.

The previous prime is 12138723361. The next prime is 12138723383. The reversal of 12138723374 is 47332783121.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3034680842 + ... + 3034680845.

It is an arithmetic number, because the mean of its divisors is an integer number (4552021266).

Almost surely, 2^12138723374 is an apocalyptic number.

12138723374 is a deficient number, since it is larger than the sum of its proper divisors (6069361690).

12138723374 is an equidigital number, since it uses as much as digits as its factorization.

12138723374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6069361689.

The product of its digits is 169344, while the sum is 41.

The spelling of 12138723374 in words is "twelve billion, one hundred thirty-eight million, seven hundred twenty-three thousand, three hundred seventy-four".