22461085818 has 48 divisors (see below), whose sum is σ = 49567115520. Its totient is φ = 7349445792.

The previous prime is 22461085813. The next prime is 22461085861. The reversal of 22461085818 is 81858016422.

22461085818 is a `hidden beast` number, since 2 + 2 + 4 + 61 + 0 + 8 + 581 + 8 = 666.

It is a super-2 number, since 2×22461085818² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22461085813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200355 + ... + 291657.

It is an arithmetic number, because the mean of its divisors is an integer number (1032648240).

Almost surely, 2^22461085818 is an apocalyptic number.

22461085818 is an abundant number, since it is smaller than the sum of its proper divisors (27106029702).

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

22461085818 is a wasteful number, since it uses less digits than its factorization.

22461085818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91563 (or 91560 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The spelling of 22461085818 in words is "twenty-two billion, four hundred sixty-one million, eighty-five thousand, eight hundred eighteen".