12643612132160 has 28 divisors (see below), whose sum is σ = 30107601390468. Its totient is φ = 5057444852736.

The previous prime is 12643612132127. The next prime is 12643612132181. The reversal of 12643612132160 is 6123121634621.

It can be written as a sum of positive squares in 2 ways, for example, as 8456743170304 + 4186868961856 = 2908048^2 + 2046184^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 19755643637 + ... + 19755644276.

It is an arithmetic number, because the mean of its divisors is an integer number (1075271478231).

Almost surely, 2^{12643612132160} is an apocalyptic number.

12643612132160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12643612132160 is an abundant number, since it is smaller than the sum of its proper divisors (17463989258308).

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

12643612132160 is an equidigital number, since it uses as much as digits as its factorization.

12643612132160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39511287930 (or 39511287920 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

Adding to 12643612132160 its reverse (6123121634621), we get a palindrome (18766733766781).

The spelling of 12643612132160 in words is "twelve trillion, six hundred forty-three billion, six hundred twelve million, one hundred thirty-two thousand, one hundred sixty".