12138598833 has 4 divisors (see below), whose sum is σ = 16184798448. Its totient is φ = 8092399220.

The previous prime is 12138598831. The next prime is 12138598853. The reversal of 12138598833 is 33889583121.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 33889583121 = 3 ⋅11296527707.

It is a cyclic number.

It is not a de Polignac number, because 12138598833 - 2¹ = 12138598831 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12138598831) 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, 2023099803 + ... + 2023099808.

It is an arithmetic number, because the mean of its divisors is an integer number (4046199612).

Almost surely, 2^12138598833 is an apocalyptic number.

It is an amenable number.

12138598833 is a deficient number, since it is larger than the sum of its proper divisors (4046199615).

12138598833 is an equidigital number, since it uses as much as digits as its factorization.

12138598833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4046199614.

The product of its digits is 1244160, while the sum is 51.

The spelling of 12138598833 in words is "twelve billion, one hundred thirty-eight million, five hundred ninety-eight thousand, eight hundred thirty-three".