12506667645 has 8 divisors (see below), whose sum is σ = 20010668256. Its totient is φ = 6670222736.

The previous prime is 12506667631. The next prime is 12506667707. The reversal of 12506667645 is 54676660521.

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

It is a cyclic number.

It is not a de Polignac number, because 12506667645 - 2⁶ = 12506667581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12506667594 and 12506667603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416888907 + ... + 416888936.

It is an arithmetic number, because the mean of its divisors is an integer number (2501333532).

Almost surely, 2^12506667645 is an apocalyptic number.

12506667645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12506667645 is a deficient number, since it is larger than the sum of its proper divisors (7504000611).

12506667645 is an equidigital number, since it uses as much as digits as its factorization.

12506667645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833777851.

The product of its (nonzero) digits is 1814400, while the sum is 48.

The spelling of 12506667645 in words is "twelve billion, five hundred six million, six hundred sixty-seven thousand, six hundred forty-five".