12622400405 has 4 divisors (see below), whose sum is σ = 15146880492. Its totient is φ = 10097920320.

The previous prime is 12622400393. The next prime is 12622400407. The reversal of 12622400405 is 50400422621.

12622400405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2565118609 + 10057281796 = 50647^2 + 100286^2 .

It is not a de Polignac number, because 12622400405 - 2⁴ = 12622400389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12622400407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1262240036 + ... + 1262240045.

It is an arithmetic number, because the mean of its divisors is an integer number (3786720123).

Almost surely, 2^12622400405 is an apocalyptic number.

It is an amenable number.

12622400405 is a deficient number, since it is larger than the sum of its proper divisors (2524480087).

12622400405 is an equidigital number, since it uses as much as digits as its factorization.

12622400405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2524480086.

The product of its (nonzero) digits is 3840, while the sum is 26.

The spelling of 12622400405 in words is "twelve billion, six hundred twenty-two million, four hundred thousand, four hundred five".