21893568848 has 10 divisors (see below), whose sum is σ = 42418789674. Its totient is φ = 10946784416.

The previous prime is 21893568839. The next prime is 21893568887. The reversal of 21893568848 is 84886539812.

It can be written as a sum of positive squares in only one way, i.e., 13417052224 + 8476516624 = 115832^2 + 92068^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684174011 + ... + 684174042.

Almost surely, 2^21893568848 is an apocalyptic number.

It is an amenable number.

21893568848 is a deficient number, since it is larger than the sum of its proper divisors (20525220826).

21893568848 is a wasteful number, since it uses less digits than its factorization.

21893568848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368348061 (or 1368348055 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 62.

The spelling of 21893568848 in words is "twenty-one billion, eight hundred ninety-three million, five hundred sixty-eight thousand, eight hundred forty-eight".