21374332310605 has 32 divisors (see below), whose sum is σ = 26729250912000. Its totient is φ = 16388141640192.

The previous prime is 21374332310579. The next prime is 21374332310633. The reversal of 21374332310605 is 50601323347312.

It is a cyclic number.

It is not a de Polignac number, because 21374332310605 - 2¹⁷ = 21374332179533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 361493574 + ... + 361552696.

It is an arithmetic number, because the mean of its divisors is an integer number (835289091000).

Almost surely, 2^{21374332310605} is an apocalyptic number.

It is an amenable number.

21374332310605 is a deficient number, since it is larger than the sum of its proper divisors (5354918601395).

21374332310605 is a wasteful number, since it uses less digits than its factorization.

21374332310605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77493.

The product of its (nonzero) digits is 272160, while the sum is 40.

Adding to 21374332310605 its reverse (50601323347312), we get a palindrome (71975655657917).

The spelling of 21374332310605 in words is "twenty-one trillion, three hundred seventy-four billion, three hundred thirty-two million, three hundred ten thousand, six hundred five".