21734606706405 has 8 divisors (see below), whose sum is σ = 34775370730272. Its totient is φ = 11591790243408.

The previous prime is 21734606706347. The next prime is 21734606706427. The reversal of 21734606706405 is 50460760643712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21734606706405 - 2⁹ = 21734606705893 is a prime.

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, 724486890199 + ... + 724486890228.

It is an arithmetic number, because the mean of its divisors is an integer number (4346921341284).

Almost surely, 2^{21734606706405} is an apocalyptic number.

It is an amenable number.

21734606706405 is a deficient number, since it is larger than the sum of its proper divisors (13040764023867).

21734606706405 is a wasteful number, since it uses less digits than its factorization.

21734606706405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448973780435.

The product of its (nonzero) digits is 5080320, while the sum is 51.

The spelling of 21734606706405 in words is "twenty-one trillion, seven hundred thirty-four billion, six hundred six million, seven hundred six thousand, four hundred five".