22547217088881 has 15 divisors (see below), whose sum is σ = 33681709120521. Its totient is φ = 15031449568908.

The previous prime is 22547217088871. The next prime is 22547217088897. The reversal of 22547217088881 is 18888071274522.

It is a happy number.

The square root of 22547217088881 is 4748391.

It is a perfect power (a square), and thus also a powerful number.

22547217088881 is a `hidden beast` number, since 2 + 2 + 5 + 472 + 1 + 7 + 0 + 8 + 88 + 81 = 666.

It is not a de Polignac number, because 22547217088881 - 2⁹ = 22547217088369 is a prime.

It is a super-2 number, since 2×22547217088881² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22547217088871) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 42471720 + ... + 42999318.

Almost surely, 2^{22547217088881} is an apocalyptic number.

22547217088881 is the 4748391-st square number.

22547217088881 is the 2374196-th centered octagonal number.

It is an amenable number.

22547217088881 is a deficient number, since it is larger than the sum of its proper divisors (11134492031640).

22547217088881 is an frugal number, since it uses more digits than its factorization.

22547217088881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055210 (or 527602 counting only the distinct ones).

The product of its (nonzero) digits is 32112640, while the sum is 63.

The spelling of 22547217088881 in words is "twenty-two trillion, five hundred forty-seven billion, two hundred seventeen million, eighty-eight thousand, eight hundred eighty-one".