22487644243656 has 160 divisors (see below), whose sum is σ = 66865439139840. Its totient is φ = 7036525665792.

The previous prime is 22487644243643. The next prime is 22487644243709. The reversal of 22487644243656 is 65634244678422.

It is a happy number.

22487644243656 is a `hidden beast` number, since 2 + 2 + 48 + 76 + 4 + 42 + 436 + 56 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 22487644243593 and 22487644243602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1554165 + ... + 6884091.

It is an arithmetic number, because the mean of its divisors is an integer number (417908994624).

Almost surely, 2^{22487644243656} 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 22487644243656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33432719569920).

22487644243656 is an abundant number, since it is smaller than the sum of its proper divisors (44377794896184).

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

22487644243656 is a wasteful number, since it uses less digits than its factorization.

22487644243656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330345 (or 5330332 counting only the distinct ones).

The product of its digits is 371589120, while the sum is 63.

The spelling of 22487644243656 in words is "twenty-two trillion, four hundred eighty-seven billion, six hundred forty-four million, two hundred forty-three thousand, six hundred fifty-six".