12645222104 has 8 divisors (see below), whose sum is σ = 23709791460. Its totient is φ = 6322611048.

The previous prime is 12645222077. The next prime is 12645222167. The reversal of 12645222104 is 40122254621.

It is a tau number, because it is divible by the number of its divisors (8).

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, 790326374 + ... + 790326389.

Almost surely, 2^12645222104 is an apocalyptic number.

It is an amenable number.

12645222104 is a deficient number, since it is larger than the sum of its proper divisors (11064569356).

12645222104 is a wasteful number, since it uses less digits than its factorization.

12645222104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580652769 (or 1580652765 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 12645222104 its reverse (40122254621), we get a palindrome (52767476725).

The spelling of 12645222104 in words is "twelve billion, six hundred forty-five million, two hundred twenty-two thousand, one hundred four".