1066635323265 has 16 divisors (see below), whose sum is σ = 1709278960896. Its totient is φ = 567984691200.

The previous prime is 1066635323227. The next prime is 1066635323267. The reversal of 1066635323265 is 5623235366601.

It is a happy number.

1066635323265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1066635323265 - 2¹⁰ = 1066635322241 is a prime.

It is a super-2 number, since 2×1066635323265² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066635323267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55457641 + ... + 55476870.

It is an arithmetic number, because the mean of its divisors is an integer number (106829935056).

Almost surely, 2^{1066635323265} is an apocalyptic number.

1066635323265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1066635323265 is a deficient number, since it is larger than the sum of its proper divisors (642643637631).

1066635323265 is a wasteful number, since it uses less digits than its factorization.

1066635323265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110935160.

The product of its (nonzero) digits is 3499200, while the sum is 48.

The spelling of 1066635323265 in words is "one trillion, sixty-six billion, six hundred thirty-five million, three hundred twenty-three thousand, two hundred sixty-five".