66068101265 has 4 divisors (see below), whose sum is σ = 79281721524. Its totient is φ = 52854481008.

The previous prime is 66068101261. The next prime is 66068101273. The reversal of 66068101265 is 56210186066.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11349067024 + 54719034241 = 106532^2 + 233921^2 .

It is a cyclic number.

It is not a de Polignac number, because 66068101265 - 2² = 66068101261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66068101261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6606810122 + ... + 6606810131.

It is an arithmetic number, because the mean of its divisors is an integer number (19820430381).

Almost surely, 2^66068101265 is an apocalyptic number.

It is an amenable number.

66068101265 is a deficient number, since it is larger than the sum of its proper divisors (13213620259).

66068101265 is a wasteful number, since it uses less digits than its factorization.

66068101265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13213620258.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 66068101265 in words is "sixty-six billion, sixty-eight million, one hundred one thousand, two hundred sixty-five".