21850883684 has 24 divisors (see below), whose sum is σ = 43716953280. Its totient is φ = 9361410336.

The previous prime is 21850883669. The next prime is 21850883711. The reversal of 21850883684 is 48638805812.

It is a super-2 number, since 2×21850883684² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52682 + ... + 215585.

It is an arithmetic number, because the mean of its divisors is an integer number (1821539720).

Almost surely, 2^21850883684 is an apocalyptic number.

It is an amenable number.

21850883684 is an abundant number, since it is smaller than the sum of its proper divisors (21866069596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21850883684 is a wasteful number, since it uses less digits than its factorization.

21850883684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271187 (or 271185 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 53.

The spelling of 21850883684 in words is "twenty-one billion, eight hundred fifty million, eight hundred eighty-three thousand, six hundred eighty-four".