22218078453 has 8 divisors (see below), whose sum is σ = 30912109248. Its totient is φ = 14168049984.

The previous prime is 22218078439. The next prime is 22218078521. The reversal of 22218078453 is 35487081222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22218078453 - 2¹⁶ = 22218012917 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22218078433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161000500 + ... + 161000637.

It is an arithmetic number, because the mean of its divisors is an integer number (3864013656).

Almost surely, 2^22218078453 is an apocalyptic number.

22218078453 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

22218078453 is a deficient number, since it is larger than the sum of its proper divisors (8694030795).

22218078453 is a wasteful number, since it uses less digits than its factorization.

22218078453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322001163.

The product of its (nonzero) digits is 215040, while the sum is 42.

The spelling of 22218078453 in words is "twenty-two billion, two hundred eighteen million, seventy-eight thousand, four hundred fifty-three".