12563853756 has 24 divisors (see below), whose sum is σ = 29668861824. Its totient is φ = 4137493680.

The previous prime is 12563853703. The next prime is 12563853763. The reversal of 12563853756 is 65735836521.

It is a junction number, because it is equal to n+sod(n) for n = 12563853699 and 12563853708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6306160 + ... + 6308151.

It is an arithmetic number, because the mean of its divisors is an integer number (1236202576).

Almost surely, 2^12563853756 is an apocalyptic number.

It is an amenable number.

12563853756 is an abundant number, since it is smaller than the sum of its proper divisors (17105008068).

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

12563853756 is a wasteful number, since it uses less digits than its factorization.

12563853756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12614401 (or 12614399 counting only the distinct ones).

The product of its digits is 4536000, while the sum is 51.

The spelling of 12563853756 in words is "twelve billion, five hundred sixty-three million, eight hundred fifty-three thousand, seven hundred fifty-six".