22027637772 has 144 divisors (see below), whose sum is σ = 67180428000. Its totient is φ = 6222763008.

The previous prime is 22027637761. The next prime is 22027637773. The reversal of 22027637772 is 27773672022.

22027637772 is a `hidden beast` number, since 2 + 2 + 0 + 2 + 7 + 637 + 7 + 7 + 2 = 666.

It is a super-2 number, since 2×22027637772² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22027637773) 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 47 ways as a sum of consecutive naturals, for example, 447604 + ... + 494372.

It is an arithmetic number, because the mean of its divisors is an integer number (466530750).

Almost surely, 2^22027637772 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 22027637772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33590214000).

22027637772 is an abundant number, since it is smaller than the sum of its proper divisors (45152790228).

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

22027637772 is a wasteful number, since it uses less digits than its factorization.

22027637772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46885 (or 46870 counting only the distinct ones).

The product of its (nonzero) digits is 691488, while the sum is 45.

The spelling of 22027637772 in words is "twenty-two billion, twenty-seven million, six hundred thirty-seven thousand, seven hundred seventy-two".