17666705005 has 16 divisors (see below), whose sum is σ = 21327231744. Its totient is φ = 14048648640.

The previous prime is 17666705003. The next prime is 17666705057. The reversal of 17666705005 is 50050766671.

It is not a de Polignac number, because 17666705005 - 2¹ = 17666705003 is a prime.

It is a super-2 number, since 2×17666705005² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17666705003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2989884 + ... + 2995786.

It is an arithmetic number, because the mean of its divisors is an integer number (1332951984).

Almost surely, 2^17666705005 is an apocalyptic number.

It is an amenable number.

17666705005 is a deficient number, since it is larger than the sum of its proper divisors (3660526739).

17666705005 is a wasteful number, since it uses less digits than its factorization.

17666705005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9396.

The product of its (nonzero) digits is 264600, while the sum is 43.

The spelling of 17666705005 in words is "seventeen billion, six hundred sixty-six million, seven hundred five thousand, five".