21050603868532 has 96 divisors (see below), whose sum is σ = 45471539635200. Its totient is φ = 8322323263488.

The previous prime is 21050603868491. The next prime is 21050603868559. The reversal of 21050603868532 is 23586830605012.

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 31 ways as a sum of consecutive naturals, for example, 3108694 + ... + 7194802.

It is an arithmetic number, because the mean of its divisors is an integer number (473661871200).

Almost surely, 2^{21050603868532} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21050603868532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22735769817600).

21050603868532 is an abundant number, since it is smaller than the sum of its proper divisors (24420935766668).

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

21050603868532 is a wasteful number, since it uses less digits than its factorization.

21050603868532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4086353 (or 4086351 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 49.

The spelling of 21050603868532 in words is "twenty-one trillion, fifty billion, six hundred three million, eight hundred sixty-eight thousand, five hundred thirty-two".