12267489679 has 4 divisors (see below), whose sum is σ = 12282112080. Its totient is φ = 12252867280.

The previous prime is 12267489677. The next prime is 12267489683. The reversal of 12267489679 is 97698476221.

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 12267489679 - 2¹ = 12267489677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12267489673) 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, 7309942 + ... + 7311619.

It is an arithmetic number, because the mean of its divisors is an integer number (3070528020).

Almost surely, 2^12267489679 is an apocalyptic number.

12267489679 is a deficient number, since it is larger than the sum of its proper divisors (14622401).

12267489679 is an equidigital number, since it uses as much as digits as its factorization.

12267489679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14622400.

The product of its digits is 18289152, while the sum is 61.

The spelling of 12267489679 in words is "twelve billion, two hundred sixty-seven million, four hundred eighty-nine thousand, six hundred seventy-nine".