66683297113 has 4 divisors (see below), whose sum is σ = 70605844020. Its totient is φ = 62760750208.

The previous prime is 66683297111. The next prime is 66683297129. The reversal of 66683297113 is 31179238666.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25170457104 + 41512840009 = 158652^2 + 203747^2 .

It is a cyclic number.

It is not a de Polignac number, because 66683297113 - 2¹ = 66683297111 is a prime.

It is a super-2 number, since 2×66683297113² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66683297111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1961273428 + ... + 1961273461.

It is an arithmetic number, because the mean of its divisors is an integer number (17651461005).

Almost surely, 2^66683297113 is an apocalyptic number.

It is an amenable number.

66683297113 is a deficient number, since it is larger than the sum of its proper divisors (3922546907).

66683297113 is a wasteful number, since it uses less digits than its factorization.

66683297113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922546906.

The product of its digits is 1959552, while the sum is 52.

The spelling of 66683297113 in words is "sixty-six billion, six hundred eighty-three million, two hundred ninety-seven thousand, one hundred thirteen".