1068132166565 has 8 divisors (see below), whose sum is σ = 1305942724728. Its totient is φ = 838382983360.

The previous prime is 1068132166561. The next prime is 1068132166567. The reversal of 1068132166565 is 5656612318601.

It can be written as a sum of positive squares in 4 ways, for example, as 60224595649 + 1007907570916 = 245407^2 + 1003946^2 .

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

It is not a de Polignac number, because 1068132166565 - 2² = 1068132166561 is a prime.

It is a super-2 number, since 2×1068132166565² (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 not an unprimeable number, because it can be changed into a prime (1068132166561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2015343446 + ... + 2015343975.

It is an arithmetic number, because the mean of its divisors is an integer number (163242840591).

Almost surely, 2^{1068132166565} is an apocalyptic number.

It is an amenable number.

1068132166565 is a deficient number, since it is larger than the sum of its proper divisors (237810558163).

1068132166565 is an equidigital number, since it uses as much as digits as its factorization.

1068132166565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030687479.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 1068132166565 in words is "one trillion, sixty-eight billion, one hundred thirty-two million, one hundred sixty-six thousand, five hundred sixty-five".