12645461663 has 8 divisors (see below), whose sum is σ = 13211317248. Its totient is φ = 12080943864.

The previous prime is 12645461659. The next prime is 12645461693. The reversal of 12645461663 is 36616454621.

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 12645461663 - 2² = 12645461659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12645461693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315095 + ... + 352952.

It is an arithmetic number, because the mean of its divisors is an integer number (1651414656).

Almost surely, 2^12645461663 is an apocalyptic number.

12645461663 is a deficient number, since it is larger than the sum of its proper divisors (565855585).

12645461663 is an equidigital number, since it uses as much as digits as its factorization.

12645461663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668893.

The product of its digits is 622080, while the sum is 44.

The spelling of 12645461663 in words is "twelve billion, six hundred forty-five million, four hundred sixty-one thousand, six hundred sixty-three".