12664115105 has 8 divisors (see below), whose sum is σ = 15214193064. Its totient is φ = 10119788800.

The previous prime is 12664115063. The next prime is 12664115111. The reversal of 12664115105 is 50151146621.

It can be written as a sum of positive squares in 4 ways, for example, as 65399569 + 12598715536 = 8087^2 + 112244^2 .

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

It is not a de Polignac number, because 12664115105 - 2¹⁸ = 12663852961 is a prime.

It is a super-2 number, since 2×12664115105² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1433066 + ... + 1441875.

It is an arithmetic number, because the mean of its divisors is an integer number (1901774133).

Almost surely, 2^12664115105 is an apocalyptic number.

It is an amenable number.

12664115105 is a deficient number, since it is larger than the sum of its proper divisors (2550077959).

12664115105 is an equidigital number, since it uses as much as digits as its factorization.

12664115105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875827.

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 12664115105 in words is "twelve billion, six hundred sixty-four million, one hundred fifteen thousand, one hundred five".