12663520512 has 72 divisors (see below), whose sum is σ = 34130221440. Its totient is φ = 4167720960.

The previous prime is 12663520487. The next prime is 12663520559. The reversal of 12663520512 is 21502536621.

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, 43689 + ... + 165032.

Almost surely, 2^12663520512 is an apocalyptic number.

12663520512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12663520512 is an abundant number, since it is smaller than the sum of its proper divisors (21466700928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12663520512 is an equidigital number, since it uses as much as digits as its factorization.

12663520512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208819 (or 208805 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 12663520512 in words is "twelve billion, six hundred sixty-three million, five hundred twenty thousand, five hundred twelve".