66775383176 has 32 divisors (see below), whose sum is σ = 126060641280. Its totient is φ = 33159772800.

The previous prime is 66775383139. The next prime is 66775383179. The reversal of 66775383176 is 67138357766.

It is not an unprimeable number, because it can be changed into a prime (66775383179) 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 7 ways as a sum of consecutive naturals, for example, 929540 + ... + 998796.

It is an arithmetic number, because the mean of its divisors is an integer number (3939395040).

Almost surely, 2^66775383176 is an apocalyptic number.

It is an amenable number.

66775383176 is a deficient number, since it is larger than the sum of its proper divisors (59285258104).

66775383176 is a wasteful number, since it uses less digits than its factorization.

66775383176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70085 (or 70081 counting only the distinct ones).

The product of its digits is 26671680, while the sum is 59.

The spelling of 66775383176 in words is "sixty-six billion, seven hundred seventy-five million, three hundred eighty-three thousand, one hundred seventy-six".