66726607703 has 24 divisors (see below), whose sum is σ = 79042873728. Its totient is φ = 55177563168.

The previous prime is 66726607691. The next prime is 66726607723. The reversal of 66726607703 is 30770662766.

It is not a de Polignac number, because 66726607703 - 2¹² = 66726603607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66726607723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8726600 + ... + 8734242.

It is an arithmetic number, because the mean of its divisors is an integer number (3293453072).

Almost surely, 2^66726607703 is an apocalyptic number.

66726607703 is a deficient number, since it is larger than the sum of its proper divisors (12316266025).

66726607703 is a wasteful number, since it uses less digits than its factorization.

66726607703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9191 (or 9162 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 50.

The spelling of 66726607703 in words is "sixty-six billion, seven hundred twenty-six million, six hundred seven thousand, seven hundred three".