66277472317 has 8 divisors (see below), whose sum is σ = 75747252096. Its totient is φ = 56808084912.

The previous prime is 66277472311. The next prime is 66277472333. The reversal of 66277472317 is 71327477266.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66277472317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66277472311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544683 + ... + 655159.

It is an arithmetic number, because the mean of its divisors is an integer number (9468406512).

Almost surely, 2^66277472317 is an apocalyptic number.

It is an amenable number.

66277472317 is a deficient number, since it is larger than the sum of its proper divisors (9469779779).

66277472317 is a wasteful number, since it uses less digits than its factorization.

66277472317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196187.

The product of its digits is 4148928, while the sum is 52.

The spelling of 66277472317 in words is "sixty-six billion, two hundred seventy-seven million, four hundred seventy-two thousand, three hundred seventeen".