21343452514 has 16 divisors (see below), whose sum is σ = 33704647200. Its totient is φ = 10108718784.

The previous prime is 21343452511. The next prime is 21343452527. The reversal of 21343452514 is 41525434312.

It is a self number, because there is not a number n which added to its sum of digits gives 21343452514.

It is not an unprimeable number, because it can be changed into a prime (21343452511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291594 + ... + 357370.

It is an arithmetic number, because the mean of its divisors is an integer number (2106540450).

Almost surely, 2^21343452514 is an apocalyptic number.

21343452514 is a deficient number, since it is larger than the sum of its proper divisors (12361194686).

21343452514 is a wasteful number, since it uses less digits than its factorization.

21343452514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74337.

The product of its digits is 57600, while the sum is 34.

Adding to 21343452514 its reverse (41525434312), we get a palindrome (62868886826).

The spelling of 21343452514 in words is "twenty-one billion, three hundred forty-three million, four hundred fifty-two thousand, five hundred fourteen".