21616875182 has 48 divisors (see below), whose sum is σ = 38191824000. Its totient is φ = 9148575744.

The previous prime is 21616875179. The next prime is 21616875199. The reversal of 21616875182 is 28157861612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12288419 + ... + 12290177.

It is an arithmetic number, because the mean of its divisors is an integer number (795663000).

Almost surely, 2^21616875182 is an apocalyptic number.

21616875182 is a deficient number, since it is larger than the sum of its proper divisors (16574948818).

21616875182 is a wasteful number, since it uses less digits than its factorization.

21616875182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3273 (or 3266 counting only the distinct ones).

The product of its digits is 322560, while the sum is 47.

The spelling of 21616875182 in words is "twenty-one billion, six hundred sixteen million, eight hundred seventy-five thousand, one hundred eighty-two".