1665011106517 has 8 divisors (see below), whose sum is σ = 1829633971392. Its totient is φ = 1502597944800.

The previous prime is 1665011106509. The next prime is 1665011106533. The reversal of 1665011106517 is 7156011105661.

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

It is a cyclic number.

It is not a de Polignac number, because 1665011106517 - 2³ = 1665011106509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1665011106517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1665011506517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552424209 + ... + 552427222.

It is an arithmetic number, because the mean of its divisors is an integer number (228704246424).

Almost surely, 2^{1665011106517} is an apocalyptic number.

It is an amenable number.

1665011106517 is a deficient number, since it is larger than the sum of its proper divisors (164622864875).

1665011106517 is a wasteful number, since it uses less digits than its factorization.

1665011106517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104851579.

The product of its (nonzero) digits is 37800, while the sum is 40.

The spelling of 1665011106517 in words is "one trillion, six hundred sixty-five billion, eleven million, one hundred six thousand, five hundred seventeen".