22561512663560 has 128 divisors (see below), whose sum is σ = 55067582868480. Its totient is φ = 8269677462528.

The previous prime is 22561512663553. The next prime is 22561512663583. The reversal of 22561512663560 is 6536621516522.

It is a junction number, because it is equal to n+sod(n) for n = 22561512663499 and 22561512663508.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72993662 + ... + 73302098.

It is an arithmetic number, because the mean of its divisors is an integer number (430215491160).

Almost surely, 2^{22561512663560} is an apocalyptic number.

22561512663560 is a gapful number since it is divisible by the number (20) 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 22561512663560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27533791434240).

22561512663560 is an abundant number, since it is smaller than the sum of its proper divisors (32506070204920).

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

22561512663560 is a wasteful number, since it uses less digits than its factorization.

22561512663560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309487 (or 309483 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 50.

The spelling of 22561512663560 in words is "twenty-two trillion, five hundred sixty-one billion, five hundred twelve million, six hundred sixty-three thousand, five hundred sixty".