12564821130 has 32 divisors (see below), whose sum is σ = 30666686400. Its totient is φ = 3293828352.

The previous prime is 12564821107. The next prime is 12564821131. The reversal of 12564821130 is 3112846521.

It is a junction number, because it is equal to n+sod(n) for n = 12564821091 and 12564821100.

It is not an unprimeable number, because it can be changed into a prime (12564821131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3547615 + ... + 3551154.

It is an arithmetic number, because the mean of its divisors is an integer number (958333950).

Almost surely, 2^12564821130 is an apocalyptic number.

12564821130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12564821130 is an abundant number, since it is smaller than the sum of its proper divisors (18101865270).

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

12564821130 is a wasteful number, since it uses less digits than its factorization.

12564821130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7098838.

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 12564821130 in words is "twelve billion, five hundred sixty-four million, eight hundred twenty-one thousand, one hundred thirty".