12563162656 has 96 divisors (see below), whose sum is σ = 28612398528. Its totient is φ = 5366538240.

The previous prime is 12563162627. The next prime is 12563162681. The reversal of 12563162656 is 65626136521.

It is a super-2 number, since 2×12563162656² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5701651 + ... + 5703853.

It is an arithmetic number, because the mean of its divisors is an integer number (298045818).

Almost surely, 2^12563162656 is an apocalyptic number.

12563162656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12563162656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14306199264).

12563162656 is an abundant number, since it is smaller than the sum of its proper divisors (16049235872).

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

12563162656 is a wasteful number, since it uses less digits than its factorization.

12563162656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3194 (or 3186 counting only the distinct ones).

The product of its digits is 388800, while the sum is 43.

The spelling of 12563162656 in words is "twelve billion, five hundred sixty-three million, one hundred sixty-two thousand, six hundred fifty-six".