12108374391 has 4 divisors (see below), whose sum is σ = 16144499192. Its totient is φ = 8072249592.

The previous prime is 12108374387. The next prime is 12108374417. The reversal of 12108374391 is 19347380121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19347380121 = 3 ⋅6449126707.

It is not a de Polignac number, because 12108374391 - 2² = 12108374387 is a prime.

It is a super-2 number, since 2×12108374391² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12108374371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2018062396 + ... + 2018062401.

It is an arithmetic number, because the mean of its divisors is an integer number (4036124798).

Almost surely, 2^12108374391 is an apocalyptic number.

12108374391 is a deficient number, since it is larger than the sum of its proper divisors (4036124801).

12108374391 is an equidigital number, since it uses as much as digits as its factorization.

12108374391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4036124800.

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 12108374391 in words is "twelve billion, one hundred eight million, three hundred seventy-four thousand, three hundred ninety-one".