66755160712005 has 32 divisors (see below), whose sum is σ = 108314854483968. Its totient is φ = 35100574152000.

The previous prime is 66755160712001. The next prime is 66755160712013. The reversal of 66755160712005 is 50021706155766.

It is not a de Polignac number, because 66755160712005 - 2² = 66755160712001 is a prime.

It is a super-3 number, since 3×66755160712005³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66755160712001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52544530 + ... + 53799980.

It is an arithmetic number, because the mean of its divisors is an integer number (3384839202624).

Almost surely, 2^{66755160712005} is an apocalyptic number.

It is an amenable number.

66755160712005 is a deficient number, since it is larger than the sum of its proper divisors (41559693771963).

66755160712005 is a wasteful number, since it uses less digits than its factorization.

66755160712005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305457.

The product of its (nonzero) digits is 2646000, while the sum is 51.

The spelling of 66755160712005 in words is "sixty-six trillion, seven hundred fifty-five billion, one hundred sixty million, seven hundred twelve thousand, five".