21032032430 has 32 divisors (see below), whose sum is σ = 38182747680. Its totient is φ = 8340808320.

The previous prime is 21032032421. The next prime is 21032032447. The reversal of 21032032430 is 3423023012.

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 15 ways as a sum of consecutive naturals, for example, 709241 + ... + 738299.

It is an arithmetic number, because the mean of its divisors is an integer number (1193210865).

Almost surely, 2^21032032430 is an apocalyptic number.

21032032430 is a deficient number, since it is larger than the sum of its proper divisors (17150715250).

21032032430 is a wasteful number, since it uses less digits than its factorization.

21032032430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29684.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21032032430 its reverse (3423023012), we get a palindrome (24455055442).

The spelling of 21032032430 in words is "twenty-one billion, thirty-two million, thirty-two thousand, four hundred thirty".