21483228512 has 24 divisors (see below), whose sum is σ = 42298562376. Its totient is φ = 10740736512.

The previous prime is 21483228511. The next prime is 21483228517. The reversal of 21483228512 is 21582238412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21483228511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571448 + ... + 607880.

It is an arithmetic number, because the mean of its divisors is an integer number (1762440099).

Almost surely, 2^21483228512 is an apocalyptic number.

It is an amenable number.

21483228512 is a deficient number, since it is larger than the sum of its proper divisors (20815333864).

21483228512 is a wasteful number, since it uses less digits than its factorization.

21483228512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54870 (or 54862 counting only the distinct ones).

The product of its digits is 61440, while the sum is 38.

The spelling of 21483228512 in words is "twenty-one billion, four hundred eighty-three million, two hundred twenty-eight thousand, five hundred twelve".