12365671538 has 8 divisors (see below), whose sum is σ = 20234735280. Its totient is φ = 5620759780.

The previous prime is 12365671537. The next prime is 12365671567. The reversal of 12365671538 is 83517656321.

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

It is a junction number, because it is equal to n+sod(n) for n = 12365671492 and 12365671501.

It is not an unprimeable number, because it can be changed into a prime (12365671537) 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, 281037968 + ... + 281038011.

It is an arithmetic number, because the mean of its divisors is an integer number (2529341910).

Almost surely, 2^12365671538 is an apocalyptic number.

12365671538 is a deficient number, since it is larger than the sum of its proper divisors (7869063742).

12365671538 is a wasteful number, since it uses less digits than its factorization.

12365671538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562075992.

The product of its digits is 907200, while the sum is 47.

The spelling of 12365671538 in words is "twelve billion, three hundred sixty-five million, six hundred seventy-one thousand, five hundred thirty-eight".