201066065613 has 64 divisors (see below), whose sum is σ = 342157803520. Its totient is φ = 114313078656.

The previous prime is 201066065597. The next prime is 201066065647. The reversal of 201066065613 is 316560660102.

201066065613 is a `hidden beast` number, since 20 + 10 + 6 + 6 + 0 + 6 + 5 + 613 = 666.

It is not a de Polignac number, because 201066065613 - 2⁴ = 201066065597 is a prime.

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 (201066065413) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31695720 + ... + 31702062.

It is an arithmetic number, because the mean of its divisors is an integer number (5346215680).

Almost surely, 2^201066065613 is an apocalyptic number.

It is an amenable number.

201066065613 is a deficient number, since it is larger than the sum of its proper divisors (141091737907).

201066065613 is a wasteful number, since it uses less digits than its factorization.

201066065613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7183 (or 7177 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 201066065613 in words is "two hundred one billion, sixty-six million, sixty-five thousand, six hundred thirteen".