12118279505 has 8 divisors (see below), whose sum is σ = 14580924072. Its totient is φ = 9668631168.

The previous prime is 12118279493. The next prime is 12118279529. The reversal of 12118279505 is 50597281121.

It can be written as a sum of positive squares in 4 ways, for example, as 1505983249 + 10612296256 = 38807^2 + 103016^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12118279505 - 2¹⁴ = 12118263121 is a prime.

It is a super-2 number, since 2×12118279505² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3247004 + ... + 3250733.

It is an arithmetic number, because the mean of its divisors is an integer number (1822615509).

Almost surely, 2^12118279505 is an apocalyptic number.

It is an amenable number.

12118279505 is a deficient number, since it is larger than the sum of its proper divisors (2462644567).

12118279505 is an equidigital number, since it uses as much as digits as its factorization.

12118279505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6498115.

The product of its (nonzero) digits is 50400, while the sum is 41.

The spelling of 12118279505 in words is "twelve billion, one hundred eighteen million, two hundred seventy-nine thousand, five hundred five".