12820163120 has 20 divisors (see below), whose sum is σ = 29806879440. Its totient is φ = 5128065216.

The previous prime is 12820163101. The next prime is 12820163201. The reversal of 12820163120 is 2136102821.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 12820163120.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80125940 + ... + 80126099.

It is an arithmetic number, because the mean of its divisors is an integer number (1490343972).

Almost surely, 2^12820163120 is an apocalyptic number.

12820163120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12820163120 is an abundant number, since it is smaller than the sum of its proper divisors (16986716320).

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

12820163120 is a wasteful number, since it uses less digits than its factorization.

12820163120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160252052 (or 160252046 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 12820163120 its reverse (2136102821), we get a palindrome (14956265941).

The spelling of 12820163120 in words is "twelve billion, eight hundred twenty million, one hundred sixty-three thousand, one hundred twenty".