66275273221016 has 48 divisors (see below), whose sum is σ = 127869902710200. Its totient is φ = 32203033680384.

The previous prime is 66275273221007. The next prime is 66275273221051. The reversal of 66275273221016 is 61012237257266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5398640 + ... + 12715968.

Almost surely, 2^{66275273221016} is an apocalyptic number.

It is an amenable number.

66275273221016 is a deficient number, since it is larger than the sum of its proper divisors (61594629489184).

66275273221016 is a wasteful number, since it uses less digits than its factorization.

66275273221016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7318236 (or 7318195 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 66275273221016 in words is "sixty-six trillion, two hundred seventy-five billion, two hundred seventy-three million, two hundred twenty-one thousand, sixteen".