12236734427 has 4 divisors (see below), whose sum is σ = 12404361000. Its totient is φ = 12069107856.

The previous prime is 12236734399. The next prime is 12236734429. The reversal of 12236734427 is 72443763221.

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

It is a cyclic number.

It is not a de Polignac number, because 12236734427 - 2¹⁰ = 12236733403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12236734429) 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, 83813177 + ... + 83813322.

It is an arithmetic number, because the mean of its divisors is an integer number (3101090250).

Almost surely, 2^12236734427 is an apocalyptic number.

12236734427 is a deficient number, since it is larger than the sum of its proper divisors (167626573).

12236734427 is an equidigital number, since it uses as much as digits as its factorization.

12236734427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167626572.

The product of its digits is 338688, while the sum is 41.

The spelling of 12236734427 in words is "twelve billion, two hundred thirty-six million, seven hundred thirty-four thousand, four hundred twenty-seven".