12563775392 has 144 divisors (see below), whose sum is σ = 29744144640. Its totient is φ = 5116801536.

The previous prime is 12563775383. The next prime is 12563775397. The reversal of 12563775392 is 29357736521.

It is a self number, because there is not a number n which added to its sum of digits gives 12563775392.

It is not an unprimeable number, because it can be changed into a prime (12563775397) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27135353 + ... + 27135815.

It is an arithmetic number, because the mean of its divisors is an integer number (206556560).

Almost surely, 2^12563775392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12563775392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14872072320).

12563775392 is an abundant number, since it is smaller than the sum of its proper divisors (17180369248).

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

12563775392 is a wasteful number, since it uses less digits than its factorization.

12563775392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755 (or 724 counting only the distinct ones).

The product of its digits is 2381400, while the sum is 50.

The spelling of 12563775392 in words is "twelve billion, five hundred sixty-three million, seven hundred seventy-five thousand, three hundred ninety-two".