21414435236 has 12 divisors (see below), whose sum is σ = 37484065920. Its totient is φ = 10704702120.

The previous prime is 21414435221. The next prime is 21414435247. The reversal of 21414435236 is 63253441412.

It is a junction number, because it is equal to n+sod(n) for n = 21414435196 and 21414435205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609656 + ... + 643823.

It is an arithmetic number, because the mean of its divisors is an integer number (3123672160).

Almost surely, 2^21414435236 is an apocalyptic number.

It is an amenable number.

21414435236 is a deficient number, since it is larger than the sum of its proper divisors (16069630684).

21414435236 is a wasteful number, since it uses less digits than its factorization.

21414435236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257754 (or 1257752 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

Adding to 21414435236 its reverse (63253441412), we get a palindrome (84667876648).

The spelling of 21414435236 in words is "twenty-one billion, four hundred fourteen million, four hundred thirty-five thousand, two hundred thirty-six".