22636289849472 has 1280 divisors, whose sum is σ = 77500256064000. Its totient is φ = 6540021596160.

The previous prime is 22636289849449. The next prime is 22636289849473. The reversal of 22636289849472 is 27494898263622.

22636289849472 is a `hidden beast` number, since 2 + 2 + 6 + 3 + 6 + 28 + 98 + 49 + 472 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 22636289849472.

It is not an unprimeable number, because it can be changed into a prime (22636289849473) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 83528744697 + ... + 83528744967.

It is an arithmetic number, because the mean of its divisors is an integer number (60547075050).

Almost surely, 2^{22636289849472} 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 22636289849472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38750128032000).

22636289849472 is an abundant number, since it is smaller than the sum of its proper divisors (54863966214528).

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

22636289849472 is a wasteful number, since it uses less digits than its factorization.

22636289849472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548 (or 501 counting only the distinct ones).

The product of its digits is 1003290624, while the sum is 72.

The spelling of 22636289849472 in words is "twenty-two trillion, six hundred thirty-six billion, two hundred eighty-nine million, eight hundred forty-nine thousand, four hundred seventy-two".