21314411452 has 24 divisors (see below), whose sum is σ = 38107734336. Its totient is φ = 10426652928.

The previous prime is 21314411411. The next prime is 21314411467. The reversal of 21314411452 is 25411441312.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21314411452.

It is a congruent number.

It is an unprimeable number.

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, 535968 + ... + 574360.

It is an arithmetic number, because the mean of its divisors is an integer number (1587822264).

Almost surely, 2^21314411452 is an apocalyptic number.

It is an amenable number.

21314411452 is a deficient number, since it is larger than the sum of its proper divisors (16793322884).

21314411452 is a wasteful number, since it uses less digits than its factorization.

21314411452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41397 (or 41395 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

Adding to 21314411452 its reverse (25411441312), we get a palindrome (46725852764).

The spelling of 21314411452 in words is "twenty-one billion, three hundred fourteen million, four hundred eleven thousand, four hundred fifty-two".