22661836672 has 64 divisors (see below), whose sum is σ = 48704490000. Its totient is φ = 10463125504.

The previous prime is 22661836667. The next prime is 22661836679. The reversal of 22661836672 is 27663816622.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22661836679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17079 + ... + 213577.

Almost surely, 2^22661836672 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 22661836672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24352245000).

22661836672 is an abundant number, since it is smaller than the sum of its proper divisors (26042653328).

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

22661836672 is a wasteful number, since it uses less digits than its factorization.

22661836672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196583 (or 196571 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 49.

The spelling of 22661836672 in words is "twenty-two billion, six hundred sixty-one million, eight hundred thirty-six thousand, six hundred seventy-two".