65066656013 has 4 divisors (see below), whose sum is σ = 65114255520. Its totient is φ = 65019056508.

The previous prime is 65066655923. The next prime is 65066656033. The reversal of 65066656013 is 31065666056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65066656013 - 2²⁶ = 64999547149 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 (65066656033) 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, 23797703 + ... + 23800436.

It is an arithmetic number, because the mean of its divisors is an integer number (16278563880).

Almost surely, 2^65066656013 is an apocalyptic number.

It is an amenable number.

65066656013 is a deficient number, since it is larger than the sum of its proper divisors (47599507).

65066656013 is a wasteful number, since it uses less digits than its factorization.

65066656013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47599506.

The product of its (nonzero) digits is 583200, while the sum is 44.

The spelling of 65066656013 in words is "sixty-five billion, sixty-six million, six hundred fifty-six thousand, thirteen".