12660263712 has 60 divisors (see below), whose sum is σ = 37233491526. Its totient is φ = 4220087040.

The previous prime is 12660263699. The next prime is 12660263717. The reversal of 12660263712 is 21736206621.

12660263712 is a `hidden beast` number, since 1 + 2 + 6 + 6 + 0 + 2 + 637 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8821717776 + 3838545936 = 93924^2 + 61956^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12660263717) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2439589 + ... + 2444772.

Almost surely, 2^12660263712 is an apocalyptic number.

12660263712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12660263712 is an abundant number, since it is smaller than the sum of its proper divisors (24573227814).

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

12660263712 is an equidigital number, since it uses as much as digits as its factorization.

12660263712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4884383 (or 4884366 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 12660263712 in words is "twelve billion, six hundred sixty million, two hundred sixty-three thousand, seven hundred twelve".