21483499968 has 896 divisors, whose sum is σ = 80900259840. Its totient is φ = 5456056320.

The previous prime is 21483499837. The next prime is 21483500009. The reversal of 21483499968 is 86999438412.

21483499968 is a `hidden beast` number, since 2 + 1 + 4 + 83 + 499 + 9 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 405349030 + ... + 405349082.

Almost surely, 2^21483499968 is an apocalyptic number.

21483499968 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21483499968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40450129920).

21483499968 is an abundant number, since it is smaller than the sum of its proper divisors (59416759872).

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

21483499968 is a wasteful number, since it uses less digits than its factorization.

21483499968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 166 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 63.

The spelling of 21483499968 in words is "twenty-one billion, four hundred eighty-three million, four hundred ninety-nine thousand, nine hundred sixty-eight".