12381720283 has 4 divisors (see below), whose sum is σ = 12423979008. Its totient is φ = 12339461560.

The previous prime is 12381720271. The next prime is 12381720343. The reversal of 12381720283 is 38202718321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38202718321 = 88003 ⋅434107.

It is a cyclic number.

It is not a de Polignac number, because 12381720283 - 2⁹ = 12381719771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12381720223) 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, 21128923 + ... + 21129508.

It is an arithmetic number, because the mean of its divisors is an integer number (3105994752).

Almost surely, 2^12381720283 is an apocalyptic number.

12381720283 is a deficient number, since it is larger than the sum of its proper divisors (42258725).

12381720283 is an equidigital number, since it uses as much as digits as its factorization.

12381720283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42258724.

The product of its (nonzero) digits is 32256, while the sum is 37.

The spelling of 12381720283 in words is "twelve billion, three hundred eighty-one million, seven hundred twenty thousand, two hundred eighty-three".