22161881255 has 8 divisors (see below), whose sum is σ = 26614993392. Its totient is φ = 17715681088.

The previous prime is 22161881237. The next prime is 22161881263. The reversal of 22161881255 is 55218816122.

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

It is a cyclic number.

It is not a de Polignac number, because 22161881255 - 2⁶ = 22161881191 is a prime.

It is a super-2 number, since 2×22161881255² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1720934 + ... + 1733763.

It is an arithmetic number, because the mean of its divisors is an integer number (3326874174).

Almost surely, 2^22161881255 is an apocalyptic number.

22161881255 is a deficient number, since it is larger than the sum of its proper divisors (4453112137).

22161881255 is a wasteful number, since it uses less digits than its factorization.

22161881255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3455985.

The product of its digits is 76800, while the sum is 41.

The spelling of 22161881255 in words is "twenty-two billion, one hundred sixty-one million, eight hundred eighty-one thousand, two hundred fifty-five".