22113555668 has 6 divisors (see below), whose sum is σ = 38698722426. Its totient is φ = 11056777832.

The previous prime is 22113555617. The next prime is 22113555671. The reversal of 22113555668 is 86655531122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22023153604 + 90402064 = 148402^2 + 9508^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2764194455 + ... + 2764194462.

It is an arithmetic number, because the mean of its divisors is an integer number (6449787071).

Almost surely, 2^22113555668 is an apocalyptic number.

It is an amenable number.

22113555668 is a deficient number, since it is larger than the sum of its proper divisors (16585166758).

22113555668 is a wasteful number, since it uses less digits than its factorization.

22113555668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528388921 (or 5528388919 counting only the distinct ones).

The product of its digits is 432000, while the sum is 44.

The spelling of 22113555668 in words is "twenty-two billion, one hundred thirteen million, five hundred fifty-five thousand, six hundred sixty-eight".