66765552045316 has 12 divisors (see below), whose sum is σ = 117731622309840. Its totient is φ = 33127945671080.

The previous prime is 66765552045307. The next prime is 66765552045319. The reversal of 66765552045316 is 61354025556766.

It is not an unprimeable number, because it can be changed into a prime (66765552045319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63707587306 + ... + 63707588353.

It is an arithmetic number, because the mean of its divisors is an integer number (9810968525820).

Almost surely, 2^{66765552045316} is an apocalyptic number.

It is an amenable number.

66765552045316 is a deficient number, since it is larger than the sum of its proper divisors (50966070264524).

66765552045316 is a wasteful number, since it uses less digits than its factorization.

66765552045316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127415175794 (or 127415175792 counting only the distinct ones).

The product of its (nonzero) digits is 136080000, while the sum is 61.

The spelling of 66765552045316 in words is "sixty-six trillion, seven hundred sixty-five billion, five hundred fifty-two million, forty-five thousand, three hundred sixteen".