12272637427 has 4 divisors (see below), whose sum is σ = 12272894656. Its totient is φ = 12272380200.

The previous prime is 12272637409. The next prime is 12272637451. The reversal of 12272637427 is 72473627221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12272637427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12212637427) 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, 33699 + ... + 160252.

It is an arithmetic number, because the mean of its divisors is an integer number (3068223664).

Almost surely, 2^12272637427 is an apocalyptic number.

12272637427 is a deficient number, since it is larger than the sum of its proper divisors (257229).

12272637427 is an equidigital number, since it uses as much as digits as its factorization.

12272637427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257228.

The product of its digits is 395136, while the sum is 43.

The spelling of 12272637427 in words is "twelve billion, two hundred seventy-two million, six hundred thirty-seven thousand, four hundred twenty-seven".