12051730238 has 4 divisors (see below), whose sum is σ = 18077595360. Its totient is φ = 6025865118.

The previous prime is 12051730237. The next prime is 12051730291. The reversal of 12051730238 is 83203715021.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12051730231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3012932558 + ... + 3012932561.

It is an arithmetic number, because the mean of its divisors is an integer number (4519398840).

Almost surely, 2^12051730238 is an apocalyptic number.

12051730238 is a deficient number, since it is larger than the sum of its proper divisors (6025865122).

12051730238 is an equidigital number, since it uses as much as digits as its factorization.

12051730238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6025865121.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 12051730238 in words is "twelve billion, fifty-one million, seven hundred thirty thousand, two hundred thirty-eight".