21884608163 has 8 divisors (see below), whose sum is σ = 23878763760. Its totient is φ = 19891226880.

The previous prime is 21884608033. The next prime is 21884608183. The reversal of 21884608163 is 36180648812.

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 21884608163 - 2⁸ = 21884607907 is a prime.

It is a super-3 number, since 3×21884608163³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21884608183) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 133670 + ... + 248267.

It is an arithmetic number, because the mean of its divisors is an integer number (2984845470).

Almost surely, 2^21884608163 is an apocalyptic number.

21884608163 is a deficient number, since it is larger than the sum of its proper divisors (1994155597).

21884608163 is a wasteful number, since it uses less digits than its factorization.

21884608163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387157.

The product of its (nonzero) digits is 442368, while the sum is 47.

The spelling of 21884608163 in words is "twenty-one billion, eight hundred eighty-four million, six hundred eight thousand, one hundred sixty-three".