21403334414 has 16 divisors (see below), whose sum is σ = 40027015296. Its totient is φ = 8338961400.

The previous prime is 21403334399. The next prime is 21403334437. The reversal of 21403334414 is 41443330412.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69491192 + ... + 69491499.

It is an arithmetic number, because the mean of its divisors is an integer number (2501688456).

Almost surely, 2^21403334414 is an apocalyptic number.

21403334414 is a deficient number, since it is larger than the sum of its proper divisors (18623680882).

21403334414 is a wasteful number, since it uses less digits than its factorization.

21403334414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138982711.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 21403334414 its reverse (41443330412), we get a palindrome (62846664826).

The spelling of 21403334414 in words is "twenty-one billion, four hundred three million, three hundred thirty-four thousand, four hundred fourteen".