21866674048 has 96 divisors (see below), whose sum is σ = 47264099040. Its totient is φ = 10070458368.

The previous prime is 21866674003. The next prime is 21866674117. The reversal of 21866674048 is 84047666812.

It is a junction number, because it is equal to n+sod(n) for n = 21866673986 and 21866674004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1732336 + ... + 1744912.

It is an arithmetic number, because the mean of its divisors is an integer number (492334365).

Almost surely, 2^21866674048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21866674048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23632049520).

21866674048 is an abundant number, since it is smaller than the sum of its proper divisors (25397424992).

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

21866674048 is a wasteful number, since it uses less digits than its factorization.

21866674048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12672 (or 12643 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 52.

The spelling of 21866674048 in words is "twenty-one billion, eight hundred sixty-six million, six hundred seventy-four thousand, forty-eight".