1066056501665 has 8 divisors (see below), whose sum is σ = 1288471168320. Its totient is φ = 846709623792.

The previous prime is 1066056501637. The next prime is 1066056501683. The reversal of 1066056501665 is 5661056506601.

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 1066056501665 - 2¹⁶ = 1066056436129 is a prime.

It is a super-2 number, since 2×1066056501665² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 766946429 + ... + 766947818.

It is an arithmetic number, because the mean of its divisors is an integer number (161058896040).

Almost surely, 2^{1066056501665} is an apocalyptic number.

It is an amenable number.

1066056501665 is a deficient number, since it is larger than the sum of its proper divisors (222414666655).

1066056501665 is a wasteful number, since it uses less digits than its factorization.

1066056501665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533894391.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 1066056501665 in words is "one trillion, sixty-six billion, fifty-six million, five hundred one thousand, six hundred sixty-five".