22168356887 has 4 divisors (see below), whose sum is σ = 22221265080. Its totient is φ = 22115448696.

The previous prime is 22168356883. The next prime is 22168356919. The reversal of 22168356887 is 78865386122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22168356887 - 2² = 22168356883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22168356883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26453468 + ... + 26454305.

It is an arithmetic number, because the mean of its divisors is an integer number (5555316270).

Almost surely, 2^22168356887 is an apocalyptic number.

22168356887 is a deficient number, since it is larger than the sum of its proper divisors (52908193).

22168356887 is an equidigital number, since it uses as much as digits as its factorization.

22168356887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52908192.

The product of its digits is 7741440, while the sum is 56.

The spelling of 22168356887 in words is "twenty-two billion, one hundred sixty-eight million, three hundred fifty-six thousand, eight hundred eighty-seven".