12138260267 has 8 divisors (see below), whose sum is σ = 13873007616. Its totient is φ = 10403690472.

The previous prime is 12138260237. The next prime is 12138260269. The reversal of 12138260267 is 76206283121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12138260267 - 2¹² = 12138256171 is a prime.

It is a super-2 number, since 2×12138260267² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12138260267.

It is not an unprimeable number, because it can be changed into a prime (12138260269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173288 + ... + 233034.

It is an arithmetic number, because the mean of its divisors is an integer number (1734125952).

Almost surely, 2^12138260267 is an apocalyptic number.

12138260267 is a deficient number, since it is larger than the sum of its proper divisors (1734747349).

12138260267 is an equidigital number, since it uses as much as digits as its factorization.

12138260267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88777.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 12138260267 in words is "twelve billion, one hundred thirty-eight million, two hundred sixty thousand, two hundred sixty-seven".