66177027020216 has 32 divisors (see below), whose sum is σ = 141808780236000. Its totient is φ = 28361409970176.

The previous prime is 66177027020197. The next prime is 66177027020227. The reversal of 66177027020216 is 61202072077166.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5876240 + ... + 12918368.

It is an arithmetic number, because the mean of its divisors is an integer number (4431524382375).

Almost surely, 2^{66177027020216} is an apocalyptic number.

It is an amenable number.

66177027020216 is an abundant number, since it is smaller than the sum of its proper divisors (75631753215784).

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

66177027020216 is a wasteful number, since it uses less digits than its factorization.

66177027020216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7209951 (or 7209947 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 47.

The spelling of 66177027020216 in words is "sixty-six trillion, one hundred seventy-seven billion, twenty-seven million, twenty thousand, two hundred sixteen".