66427884184 has 32 divisors (see below), whose sum is σ = 128904703200. Its totient is φ = 32054319360.

The previous prime is 66427884181. The next prime is 66427884209. The reversal of 66427884184 is 48148872466.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66427884181) 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, 466429 + ... + 591955.

It is an arithmetic number, because the mean of its divisors is an integer number (4028271975).

Almost surely, 2^66427884184 is an apocalyptic number.

It is an amenable number.

66427884184 is a deficient number, since it is larger than the sum of its proper divisors (62476819016).

66427884184 is a wasteful number, since it uses less digits than its factorization.

66427884184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127843 (or 127839 counting only the distinct ones).

The product of its digits is 16515072, while the sum is 58.

The spelling of 66427884184 in words is "sixty-six billion, four hundred twenty-seven million, eight hundred eighty-four thousand, one hundred eighty-four".