12138332793 has 4 divisors (see below), whose sum is σ = 16184443728. Its totient is φ = 8092221860.

The previous prime is 12138332779. The next prime is 12138332807. The reversal of 12138332793 is 39723383121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (12138332779) and next prime (12138332807).

It is a cyclic number.

It is not a de Polignac number, because 12138332793 - 2⁹ = 12138332281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12138332993) 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, 2023055463 + ... + 2023055468.

It is an arithmetic number, because the mean of its divisors is an integer number (4046110932).

Almost surely, 2^12138332793 is an apocalyptic number.

It is an amenable number.

12138332793 is a deficient number, since it is larger than the sum of its proper divisors (4046110935).

12138332793 is an equidigital number, since it uses as much as digits as its factorization.

12138332793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4046110934.

The product of its digits is 163296, while the sum is 42.

The spelling of 12138332793 in words is "twelve billion, one hundred thirty-eight million, three hundred thirty-two thousand, seven hundred ninety-three".