21884871016 has 16 divisors (see below), whose sum is σ = 41163583140. Its totient is φ = 10907915520.

The previous prime is 21884871007. The next prime is 21884871067. The reversal of 21884871016 is 61017848812.

It can be written as a sum of positive squares in 2 ways, for example, as 14387042916 + 7497828100 = 119946^2 + 86590^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4312305 + ... + 4317376.

Almost surely, 2^21884871016 is an apocalyptic number.

It is an amenable number.

21884871016 is a deficient number, since it is larger than the sum of its proper divisors (19278712124).

21884871016 is a wasteful number, since it uses less digits than its factorization.

21884871016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8630004 (or 8630000 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 46.

The spelling of 21884871016 in words is "twenty-one billion, eight hundred eighty-four million, eight hundred seventy-one thousand, sixteen".