66682812603 has 16 divisors (see below), whose sum is σ = 96998967936. Its totient is φ = 40411415040.

The previous prime is 66682812571. The next prime is 66682812649. The reversal of 66682812603 is 30621828666.

It is not a de Polignac number, because 66682812603 - 2⁵ = 66682812571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66682812653) 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, 613851 + ... + 714267.

It is an arithmetic number, because the mean of its divisors is an integer number (6062435496).

Almost surely, 2^66682812603 is an apocalyptic number.

66682812603 is a deficient number, since it is larger than the sum of its proper divisors (30316155333).

66682812603 is a wasteful number, since it uses less digits than its factorization.

66682812603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120554.

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 66682812603 in words is "sixty-six billion, six hundred eighty-two million, eight hundred twelve thousand, six hundred three".