12664240002 has 48 divisors (see below), whose sum is σ = 28536449760. Its totient is φ = 4209397632.

The previous prime is 12664239977. The next prime is 12664240007. The reversal of 12664240002 is 20004246621.

12664240002 is a `hidden beast` number, since 12 + 6 + 642 + 4 + 0 + 0 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12664240007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 134649 + ... + 208467.

It is an arithmetic number, because the mean of its divisors is an integer number (594509370).

Almost surely, 2^12664240002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12664240002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14268224880).

12664240002 is an abundant number, since it is smaller than the sum of its proper divisors (15872209758).

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

12664240002 is an equidigital number, since it uses as much as digits as its factorization.

12664240002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74189 (or 74177 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 12664240002 its reverse (20004246621), we get a palindrome (32668486623).

The spelling of 12664240002 in words is "twelve billion, six hundred sixty-four million, two hundred forty thousand, two".