21334216450534 has 32 divisors (see below), whose sum is σ = 34521584832000. Its totient is φ = 9829821425184.

The previous prime is 21334216450513. The next prime is 21334216450549. The reversal of 21334216450534 is 43505461243312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60748657 + ... + 61098835.

It is an arithmetic number, because the mean of its divisors is an integer number (1078799526000).

Almost surely, 2^{21334216450534} is an apocalyptic number.

21334216450534 is a deficient number, since it is larger than the sum of its proper divisors (13187368381466).

21334216450534 is a wasteful number, since it uses less digits than its factorization.

21334216450534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354172.

The product of its (nonzero) digits is 1036800, while the sum is 43.

Adding to 21334216450534 its reverse (43505461243312), we get a palindrome (64839677693846).

The spelling of 21334216450534 in words is "twenty-one trillion, three hundred thirty-four billion, two hundred sixteen million, four hundred fifty thousand, five hundred thirty-four".