66188295164 has 6 divisors (see below), whose sum is σ = 115829516544. Its totient is φ = 33094147580.

The previous prime is 66188295163. The next prime is 66188295181. The reversal of 66188295164 is 46159288166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66188295161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8273536892 + ... + 8273536899.

It is an arithmetic number, because the mean of its divisors is an integer number (19304919424).

Almost surely, 2^66188295164 is an apocalyptic number.

It is an amenable number.

66188295164 is a deficient number, since it is larger than the sum of its proper divisors (49641221380).

66188295164 is a wasteful number, since it uses less digits than its factorization.

66188295164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16547073795 (or 16547073793 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 56.

The spelling of 66188295164 in words is "sixty-six billion, one hundred eighty-eight million, two hundred ninety-five thousand, one hundred sixty-four".