21432301430 has 16 divisors (see below), whose sum is σ = 39620795760. Its totient is φ = 8341219872.

The previous prime is 21432301381. The next prime is 21432301447. The reversal of 21432301430 is 3410323412.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 21432301396 and 21432301405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28962200 + ... + 28962939.

It is an arithmetic number, because the mean of its divisors is an integer number (2476299735).

Almost surely, 2^21432301430 is an apocalyptic number.

21432301430 is a deficient number, since it is larger than the sum of its proper divisors (18188494330).

21432301430 is a wasteful number, since it uses less digits than its factorization.

21432301430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57925183.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21432301430 its reverse (3410323412), we get a palindrome (24842624842).

The spelling of 21432301430 in words is "twenty-one billion, four hundred thirty-two million, three hundred one thousand, four hundred thirty".