66973546197 has 16 divisors (see below), whose sum is σ = 99261905280. Its totient is φ = 44630204256.

The previous prime is 66973546187. The next prime is 66973546217. The reversal of 66973546197 is 79164537966.

66973546197 is a `hidden beast` number, since 6 + 6 + 9 + 7 + 3 + 5 + 4 + 619 + 7 = 666.

It is not a de Polignac number, because 66973546197 - 2²⁴ = 66956768981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66973546187) 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, 457593 + ... + 585950.

It is an arithmetic number, because the mean of its divisors is an integer number (6203869080).

Almost surely, 2^66973546197 is an apocalyptic number.

It is an amenable number.

66973546197 is a deficient number, since it is larger than the sum of its proper divisors (32288359083).

66973546197 is a wasteful number, since it uses less digits than its factorization.

66973546197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045929 (or 1045923 counting only the distinct ones).

The product of its digits is 51438240, while the sum is 63.

The spelling of 66973546197 in words is "sixty-six billion, nine hundred seventy-three million, five hundred forty-six thousand, one hundred ninety-seven".