12268379405 has 4 divisors (see below), whose sum is σ = 14722055292. Its totient is φ = 9814703520.

The previous prime is 12268379399. The next prime is 12268379411. The reversal of 12268379405 is 50497386221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50497386221 = 101 ⋅499974121.

It is an interprime number because it is at equal distance from previous prime (12268379399) and next prime (12268379411).

It can be written as a sum of positive squares in 2 ways, for example, as 9361336516 + 2907042889 = 96754^2 + 53917^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12268379405 is a prime.

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 12268379405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1226837936 + ... + 1226837945.

It is an arithmetic number, because the mean of its divisors is an integer number (3680513823).

It is a 1-persistent number, because it is pandigital, but 2⋅12268379405 = 24536758810 is not.

Almost surely, 2^12268379405 is an apocalyptic number.

It is an amenable number.

12268379405 is a deficient number, since it is larger than the sum of its proper divisors (2453675887).

12268379405 is an equidigital number, since it uses as much as digits as its factorization.

12268379405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453675886.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 12268379405 in words is "twelve billion, two hundred sixty-eight million, three hundred seventy-nine thousand, four hundred five".