21063552030 has 192 divisors, whose sum is σ = 59809726080. Its totient is φ = 5127902208.

The previous prime is 21063552001. The next prime is 21063552091. The reversal of 21063552030 is 3025536012.

21063552030 is a `hidden beast` number, since 2 + 1 + 0 + 635 + 5 + 20 + 3 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21063551985 and 21063552003.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 4056676 + ... + 4061864.

It is an arithmetic number, because the mean of its divisors is an integer number (311508990).

Almost surely, 2^21063552030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21063552030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29904863040).

21063552030 is an abundant number, since it is smaller than the sum of its proper divisors (38746174050).

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

21063552030 is a wasteful number, since it uses less digits than its factorization.

21063552030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5315 (or 5312 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The spelling of 21063552030 in words is "twenty-one billion, sixty-three million, five hundred fifty-two thousand, thirty".