21483012028 has 48 divisors (see below), whose sum is σ = 39447233280. Its totient is φ = 10224576000.

The previous prime is 21483011971. The next prime is 21483012029. The reversal of 21483012028 is 82021038412.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21483012029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3518178 + ... + 3524278.

It is an arithmetic number, because the mean of its divisors is an integer number (821817360).

Almost surely, 2^21483012028 is an apocalyptic number.

It is an amenable number.

21483012028 is a deficient number, since it is larger than the sum of its proper divisors (17964221252).

21483012028 is a wasteful number, since it uses less digits than its factorization.

21483012028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6598 (or 6596 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The spelling of 21483012028 in words is "twenty-one billion, four hundred eighty-three million, twelve thousand, twenty-eight".