66446560713 has 16 divisors (see below), whose sum is σ = 95433339456. Its totient is φ = 40880379840.

The previous prime is 66446560711. The next prime is 66446560721. The reversal of 66446560713 is 31706564466.

66446560713 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 66446560713 - 2¹ = 66446560711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66446560711) 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, 38070 + ... + 366527.

It is an arithmetic number, because the mean of its divisors is an integer number (5964583716).

Almost surely, 2^66446560713 is an apocalyptic number.

It is an amenable number.

66446560713 is a deficient number, since it is larger than the sum of its proper divisors (28986778743).

66446560713 is a wasteful number, since it uses less digits than its factorization.

66446560713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408824.

The product of its (nonzero) digits is 2177280, while the sum is 48.

The spelling of 66446560713 in words is "sixty-six billion, four hundred forty-six million, five hundred sixty thousand, seven hundred thirteen".