21414444435 has 12 divisors (see below), whose sum is σ = 37118370432. Its totient is φ = 11421037008.

The previous prime is 21414444427. The next prime is 21414444449. The reversal of 21414444435 is 53444441412.

21414444435 is a `hidden beast` number, since 2 + 141 + 44 + 44 + 435 = 666.

It is not a de Polignac number, because 21414444435 - 2³ = 21414444427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21414444435.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 237938227 + ... + 237938316.

It is an arithmetic number, because the mean of its divisors is an integer number (3093197536).

Almost surely, 2^21414444435 is an apocalyptic number.

21414444435 is a deficient number, since it is larger than the sum of its proper divisors (15703925997).

21414444435 is a wasteful number, since it uses less digits than its factorization.

21414444435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475876554 (or 475876551 counting only the distinct ones).

The product of its digits is 122880, while the sum is 36.

Adding to 21414444435 its reverse (53444441412), we get a palindrome (74858885847).

The spelling of 21414444435 in words is "twenty-one billion, four hundred fourteen million, four hundred forty-four thousand, four hundred thirty-five".