22563766537872 has 160 divisors (see below), whose sum is σ = 70126985395200. Its totient is φ = 6107137150464.

The previous prime is 22563766537783. The next prime is 22563766538017. The reversal of 22563766537872 is 27873566736522.

It is a junction number, because it is equal to n+sod(n) for n = 22563766537797 and 22563766537806.

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, 123675454 + ... + 123857762.

It is an arithmetic number, because the mean of its divisors is an integer number (438293658720).

Almost surely, 2^{22563766537872} 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 22563766537872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35063492697600).

22563766537872 is an abundant number, since it is smaller than the sum of its proper divisors (47563218857328).

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

22563766537872 is a wasteful number, since it uses less digits than its factorization.

22563766537872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201733 (or 201727 counting only the distinct ones).

The product of its digits is 1066867200, while the sum is 69.

The spelling of 22563766537872 in words is "twenty-two trillion, five hundred sixty-three billion, seven hundred sixty-six million, five hundred thirty-seven thousand, eight hundred seventy-two".