22185447368 has 36 divisors (see below), whose sum is σ = 48395610315. Its totient is φ = 9506785008.

The previous prime is 22185447343. The next prime is 22185447371. The reversal of 22185447368 is 86374458122.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 11092723684 + 11092723684 = 105322^2 + 105322^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=105322.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2945255 + ... + 2952777.

Almost surely, 2^22185447368 is an apocalyptic number.

22185447368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22185447368 is an abundant number, since it is smaller than the sum of its proper divisors (26210162947).

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

22185447368 is an frugal number, since it uses more digits than its factorization.

22185447368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15066 (or 7532 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 50.

Multiplying 22185447368 by its sum of digits (50), we get a square (1109272368400 = 1053220²).

The spelling of 22185447368 in words is "twenty-two billion, one hundred eighty-five million, four hundred forty-seven thousand, three hundred sixty-eight".