12626420326605 has 24 divisors (see below), whose sum is σ = 22298734769688. Its totient is φ = 6607032521856.

The previous prime is 12626420326591. The next prime is 12626420326613. The reversal of 12626420326605 is 50662302462621.

12626420326605 is a `hidden beast` number, since 1 + 2 + 6 + 2 + 6 + 4 + 2 + 0 + 32 + 6 + 605 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6736921331364 + 5889498995241 = 2595558^2 + 2426829^2 .

It is not a de Polignac number, because 12626420326605 - 2¹⁶ = 12626420261069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2647045902 + ... + 2647050671.

It is an arithmetic number, because the mean of its divisors is an integer number (929113948737).

Almost surely, 2^{12626420326605} is an apocalyptic number.

12626420326605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12626420326605 is a deficient number, since it is larger than the sum of its proper divisors (9672314443083).

12626420326605 is a wasteful number, since it uses less digits than its factorization.

12626420326605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5294096637 (or 5294096634 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 12626420326605 in words is "twelve trillion, six hundred twenty-six billion, four hundred twenty million, three hundred twenty-six thousand, six hundred five".