10563256320 has 128 divisors (see below), whose sum is σ = 33803477280. Its totient is φ = 2816737280.

The previous prime is 10563256309. The next prime is 10563256339. The reversal of 10563256320 is 2365236501.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×10563256320² (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 7 ways as a sum of consecutive naturals, for example, 480775 + ... + 502265.

Almost surely, 2^10563256320 is an apocalyptic number.

10563256320 is a gapful number since it is divisible by the number (10) 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 10563256320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16901738640).

10563256320 is an abundant number, since it is smaller than the sum of its proper divisors (23240220960).

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

10563256320 is an frugal number, since it uses more digits than its factorization.

10563256320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21529 (or 21501 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 33.

The spelling of 10563256320 in words is "ten billion, five hundred sixty-three million, two hundred fifty-six thousand, three hundred twenty".