21063767032 has 64 divisors (see below), whose sum is σ = 50287703040. Its totient is φ = 8032041600.

The previous prime is 21063767029. The next prime is 21063767063. The reversal of 21063767032 is 23076736012.

It is a junction number, because it is equal to n+sod(n) for n = 21063766982 and 21063767000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334819 + ... + 392722.

It is an arithmetic number, because the mean of its divisors is an integer number (785745360).

Almost surely, 2^21063767032 is an apocalyptic number.

21063767032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21063767032 is an abundant number, since it is smaller than the sum of its proper divisors (29223936008).

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

21063767032 is a wasteful number, since it uses less digits than its factorization.

21063767032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727612 (or 727608 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 37.

The spelling of 21063767032 in words is "twenty-one billion, sixty-three million, seven hundred sixty-seven thousand, thirty-two".