66277657196 has 6 divisors (see below), whose sum is σ = 115985900100. Its totient is φ = 33138828596.

The previous prime is 66277657183. The next prime is 66277657207. The reversal of 66277657196 is 69175677266.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8284707146 + ... + 8284707153.

It is an arithmetic number, because the mean of its divisors is an integer number (19330983350).

Almost surely, 2^66277657196 is an apocalyptic number.

It is an amenable number.

66277657196 is a deficient number, since it is larger than the sum of its proper divisors (49708242904).

66277657196 is a wasteful number, since it uses less digits than its factorization.

66277657196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16569414303 (or 16569414301 counting only the distinct ones).

The product of its digits is 40007520, while the sum is 62.

The spelling of 66277657196 in words is "sixty-six billion, two hundred seventy-seven million, six hundred fifty-seven thousand, one hundred ninety-six".