12665210560 has 28 divisors (see below), whose sum is σ = 30159033408. Its totient is φ = 5066084096.

The previous prime is 12665210543. The next prime is 12665210563. The reversal of 12665210560 is 6501256621.

It is not an unprimeable number, because it can be changed into a prime (12665210563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19789072 + ... + 19789711.

It is an arithmetic number, because the mean of its divisors is an integer number (1077108336).

Almost surely, 2^12665210560 is an apocalyptic number.

12665210560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12665210560 is an abundant number, since it is smaller than the sum of its proper divisors (17493822848).

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

12665210560 is an equidigital number, since it uses as much as digits as its factorization.

12665210560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39578800 (or 39578790 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 12665210560 in words is "twelve billion, six hundred sixty-five million, two hundred ten thousand, five hundred sixty".