66071912960212 has 12 divisors (see below), whose sum is σ = 115632501761140. Its totient is φ = 33034055314176.

The previous prime is 66071912960203. The next prime is 66071912960231. The reversal of 66071912960212 is 21206921917066.

It can be written as a sum of positive squares in 2 ways, for example, as 7343048557636 + 58728864402576 = 2709806^2 + 7663476^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66071912960212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475213287 + ... + 475352302.

Almost surely, 2^{66071912960212} is an apocalyptic number.

It is an amenable number.

66071912960212 is a deficient number, since it is larger than the sum of its proper divisors (49560588800928).

66071912960212 is a wasteful number, since it uses less digits than its factorization.

66071912960212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950582970 (or 950582968 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 66071912960212 in words is "sixty-six trillion, seventy-one billion, nine hundred twelve million, nine hundred sixty thousand, two hundred twelve".