12308296138 has 4 divisors (see below), whose sum is σ = 18462444210. Its totient is φ = 6154148068.

The previous prime is 12308296069. The next prime is 12308296139. The reversal of 12308296138 is 83169280321.

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

It can be written as a sum of positive squares in only one way, i.e., 12268442169 + 39853969 = 110763^2 + 6313^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12308296094 and 12308296103.

It is not an unprimeable number, because it can be changed into a prime (12308296139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3077074033 + ... + 3077074036.

Almost surely, 2^12308296138 is an apocalyptic number.

12308296138 is a deficient number, since it is larger than the sum of its proper divisors (6154148072).

12308296138 is an equidigital number, since it uses as much as digits as its factorization.

12308296138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6154148071.

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 12308296138 in words is "twelve billion, three hundred eight million, two hundred ninety-six thousand, one hundred thirty-eight".