66334531713 has 16 divisors (see below), whose sum is σ = 89823764160. Its totient is φ = 43538426624.

The previous prime is 66334531699. The next prime is 66334531751. The reversal of 66334531713 is 31713543366.

It is a cyclic number.

It is not a de Polignac number, because 66334531713 - 2⁶ = 66334531649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66334531213) 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, 470931 + ... + 595352.

It is an arithmetic number, because the mean of its divisors is an integer number (5613985260).

Almost surely, 2^66334531713 is an apocalyptic number.

It is an amenable number.

66334531713 is a deficient number, since it is larger than the sum of its proper divisors (23489232447).

66334531713 is a wasteful number, since it uses less digits than its factorization.

66334531713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066608.

The product of its digits is 408240, while the sum is 42.

The spelling of 66334531713 in words is "sixty-six billion, three hundred thirty-four million, five hundred thirty-one thousand, seven hundred thirteen".