1066015166565 has 8 divisors (see below), whose sum is σ = 1705624266528. Its totient is φ = 568541422160.

The previous prime is 1066015166549. The next prime is 1066015166621. The reversal of 1066015166565 is 5656615106601.

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

It is not a de Polignac number, because 1066015166565 - 2⁴ = 1066015166549 is a prime.

It is a super-2 number, since 2×1066015166565² (a number of 25 digits) contains 22 as substring.

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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35533838871 + ... + 35533838900.

It is an arithmetic number, because the mean of its divisors is an integer number (213203033316).

Almost surely, 2^{1066015166565} is an apocalyptic number.

1066015166565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1066015166565 is a deficient number, since it is larger than the sum of its proper divisors (639609099963).

1066015166565 is an equidigital number, since it uses as much as digits as its factorization.

1066015166565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71067677779.

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 1066015166565 in words is "one trillion, sixty-six billion, fifteen million, one hundred sixty-six thousand, five hundred sixty-five".