10021706605565 has 16 divisors (see below), whose sum is σ = 12624062830848. Its totient is φ = 7622863307136.

The previous prime is 10021706605549. The next prime is 10021706605571. The reversal of 10021706605565 is 56550660712001.

It is a cyclic number.

It is not a de Polignac number, because 10021706605565 - 2⁴ = 10021706605549 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 260894792 + ... + 260933201.

It is an arithmetic number, because the mean of its divisors is an integer number (789003926928).

Almost surely, 2^{10021706605565} is an apocalyptic number.

It is an amenable number.

10021706605565 is a deficient number, since it is larger than the sum of its proper divisors (2602356225283).

10021706605565 is a wasteful number, since it uses less digits than its factorization.

10021706605565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521828188.

The product of its (nonzero) digits is 378000, while the sum is 44.

The spelling of 10021706605565 in words is "ten trillion, twenty-one billion, seven hundred six million, six hundred five thousand, five hundred sixty-five".