21432305030 has 16 divisors (see below), whose sum is σ = 39398961600. Its totient is φ = 8390519232.

The previous prime is 21432305023. The next prime is 21432305033. The reversal of 21432305030 is 3050323412.

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 = 21432304987 and 21432305005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21432305033) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 22799855 + ... + 22800794.

It is an arithmetic number, because the mean of its divisors is an integer number (2462435100).

Almost surely, 2^21432305030 is an apocalyptic number.

21432305030 is a deficient number, since it is larger than the sum of its proper divisors (17966656570).

21432305030 is a wasteful number, since it uses less digits than its factorization.

21432305030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45600703.

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 21432305030 its reverse (3050323412), we get a palindrome (24482628442).

The spelling of 21432305030 in words is "twenty-one billion, four hundred thirty-two million, three hundred five thousand, thirty".