21433432244434 has 32 divisors (see below), whose sum is σ = 38701839888000. Its totient is φ = 8696677622400.

The previous prime is 21433432244383. The next prime is 21433432244449. The reversal of 21433432244434 is 43444223433412.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25597267 + ... + 26421334.

It is an arithmetic number, because the mean of its divisors is an integer number (1209432496500).

Almost surely, 2^{21433432244434} is an apocalyptic number.

21433432244434 is a deficient number, since it is larger than the sum of its proper divisors (17268407643566).

21433432244434 is a wasteful number, since it uses less digits than its factorization.

21433432244434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52020178.

The product of its digits is 2654208, while the sum is 43.

Adding to 21433432244434 its reverse (43444223433412), we get a palindrome (64877655677846).

The spelling of 21433432244434 in words is "twenty-one trillion, four hundred thirty-three billion, four hundred thirty-two million, two hundred forty-four thousand, four hundred thirty-four".