21032320024 has 8 divisors (see below), whose sum is σ = 39435600060. Its totient is φ = 10516160008.

The previous prime is 21032320019. The next prime is 21032320033. The reversal of 21032320024 is 42002323012.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 21032319983 and 21032320010.

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 as a sum of consecutive naturals, namely, 1314519994 + ... + 1314520009.

Almost surely, 2^21032320024 is an apocalyptic number.

It is an amenable number.

21032320024 is a deficient number, since it is larger than the sum of its proper divisors (18403280036).

21032320024 is a wasteful number, since it uses less digits than its factorization.

21032320024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629040009 (or 2629040005 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 21032320024 its reverse (42002323012), we get a palindrome (63034643036).

It can be divided in two parts, 21032 and 320024, that added together give a square (341056 = 584²).

The spelling of 21032320024 in words is "twenty-one billion, thirty-two million, three hundred twenty thousand, twenty-four".