12655520422 has 4 divisors (see below), whose sum is σ = 18983280636. Its totient is φ = 6327760210.

The previous prime is 12655520413. The next prime is 12655520459. The reversal of 12655520422 is 22402555621.

12655520422 is digitally balanced in base 5, 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 is a congruent 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 as a sum of consecutive naturals, namely, 3163880104 + ... + 3163880107.

It is an arithmetic number, because the mean of its divisors is an integer number (4745820159).

Almost surely, 2^12655520422 is an apocalyptic number.

12655520422 is a deficient number, since it is larger than the sum of its proper divisors (6327760214).

12655520422 is an equidigital number, since it uses as much as digits as its factorization.

12655520422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6327760213.

The product of its (nonzero) digits is 48000, while the sum is 34.

The spelling of 12655520422 in words is "twelve billion, six hundred fifty-five million, five hundred twenty thousand, four hundred twenty-two".