12345660646 has 8 divisors (see below), whose sum is σ = 20201990184. Its totient is φ = 5611663920.

The previous prime is 12345660623. The next prime is 12345660653. The reversal of 12345660646 is 64606654321.

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

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 3 ways as a sum of consecutive naturals, for example, 280583175 + ... + 280583218.

It is an arithmetic number, because the mean of its divisors is an integer number (2525248773).

Almost surely, 2^12345660646 is an apocalyptic number.

12345660646 is a deficient number, since it is larger than the sum of its proper divisors (7856329538).

12345660646 is a wasteful number, since it uses less digits than its factorization.

12345660646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561166406.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 12345660646 in words is "twelve billion, three hundred forty-five million, six hundred sixty thousand, six hundred forty-six".