12345660645 has 8 divisors (see below), whose sum is σ = 19753057056. Its totient is φ = 6584352336.

The previous prime is 12345660623. The next prime is 12345660653. The reversal of 12345660645 is 54606654321.

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

It is not a de Polignac number, because 12345660645 - 2¹² = 12345656549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12345660597 and 12345660606.

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 7 ways as a sum of consecutive naturals, for example, 411522007 + ... + 411522036.

It is an arithmetic number, because the mean of its divisors is an integer number (2469132132).

Almost surely, 2^12345660645 is an apocalyptic number.

12345660645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12345660645 is a deficient number, since it is larger than the sum of its proper divisors (7407396411).

12345660645 is an equidigital number, since it uses as much as digits as its factorization.

12345660645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823044051.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 12345660645 in words is "twelve billion, three hundred forty-five million, six hundred sixty thousand, six hundred forty-five".