660064713013 has 4 divisors (see below), whose sum is σ = 660528568768. Its totient is φ = 659600857260.

The previous prime is 660064712953. The next prime is 660064713023. The reversal of 660064713013 is 310317460066.

It is a happy number.

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 660064713013 - 2³⁷ = 522625759541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660064713023) 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, 231925743 + ... + 231928588.

It is an arithmetic number, because the mean of its divisors is an integer number (165132142192).

Almost surely, 2^660064713013 is an apocalyptic number.

It is an amenable number.

660064713013 is a deficient number, since it is larger than the sum of its proper divisors (463855755).

660064713013 is a wasteful number, since it uses less digits than its factorization.

660064713013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463855754.

The product of its (nonzero) digits is 54432, while the sum is 37.

The spelling of 660064713013 in words is "six hundred sixty billion, sixty-four million, seven hundred thirteen thousand, thirteen".