67666633244525 has 12 divisors (see below), whose sum is σ = 95893285969632. Its totient is φ = 46399977081840.

The previous prime is 67666633244453. The next prime is 67666633244537. The reversal of 67666633244525 is 52544233666676.

It is not a de Polignac number, because 67666633244525 - 2³⁴ = 67649453375341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 193333237667 + ... + 193333238016.

It is an arithmetic number, because the mean of its divisors is an integer number (7991107164136).

Almost surely, 2^{67666633244525} is an apocalyptic number.

It is an amenable number.

67666633244525 is a deficient number, since it is larger than the sum of its proper divisors (28226652725107).

67666633244525 is a wasteful number, since it uses less digits than its factorization.

67666633244525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386666475700 (or 386666475695 counting only the distinct ones).

The product of its digits is 783820800, while the sum is 65.

The spelling of 67666633244525 in words is "sixty-seven trillion, six hundred sixty-six billion, six hundred thirty-three million, two hundred forty-four thousand, five hundred twenty-five".