22002165556 has 96 divisors (see below), whose sum is σ = 47560826880. Its totient is φ = 8703676800.

The previous prime is 22002165533. The next prime is 22002165571. The reversal of 22002165556 is 65556120022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2084011 + ... + 2094541.

It is an arithmetic number, because the mean of its divisors is an integer number (495425280).

Almost surely, 2^22002165556 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 22002165556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23780413440).

22002165556 is an abundant number, since it is smaller than the sum of its proper divisors (25558661324).

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

22002165556 is a wasteful number, since it uses less digits than its factorization.

22002165556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10685 (or 10683 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 22002165556 its reverse (65556120022), we get a palindrome (87558285578).

The spelling of 22002165556 in words is "twenty-two billion, two million, one hundred sixty-five thousand, five hundred fifty-six".