66127771284 has 24 divisors (see below), whose sum is σ = 156251276160. Its totient is φ = 21763569984.

The previous prime is 66127771273. The next prime is 66127771301. The reversal of 66127771284 is 48217772166.

It is a congruent number.

It is an unprimeable number.

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, 34876569 + ... + 34878464.

It is an arithmetic number, because the mean of its divisors is an integer number (6510469840).

Almost surely, 2^66127771284 is an apocalyptic number.

It is an amenable number.

66127771284 is an abundant number, since it is smaller than the sum of its proper divisors (90123504876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66127771284 is a wasteful number, since it uses less digits than its factorization.

66127771284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69755119 (or 69755117 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 51.

The spelling of 66127771284 in words is "sixty-six billion, one hundred twenty-seven million, seven hundred seventy-one thousand, two hundred eighty-four".