1066157066165 has 8 divisors (see below), whose sum is σ = 1279417067448. Its totient is φ = 852906594240.

The previous prime is 1066157066101. The next prime is 1066157066171. The reversal of 1066157066165 is 5616607516601.

It can be written as a sum of positive squares in 4 ways, for example, as 50852956036 + 1015304110129 = 225506^2 + 1007623^2 .

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

It is not a de Polignac number, because 1066157066165 - 2⁶ = 1066157066101 is a prime.

It is a super-2 number, since 2×1066157066165² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 2133842 + ... + 2585651.

It is an arithmetic number, because the mean of its divisors is an integer number (159927133431).

Almost surely, 2^{1066157066165} is an apocalyptic number.

It is an amenable number.

1066157066165 is a deficient number, since it is larger than the sum of its proper divisors (213260001283).

1066157066165 is an equidigital number, since it uses as much as digits as its factorization.

1066157066165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4764679.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 1066157066165 in words is "one trillion, sixty-six billion, one hundred fifty-seven million, sixty-six thousand, one hundred sixty-five".