66256164550600 has 48 divisors (see below), whose sum is σ = 154051996062420. Its totient is φ = 26501362425600.

The previous prime is 66256164550577. The next prime is 66256164550613. The reversal of 66256164550600 is 605546165266.

It can be written as a sum of positive squares in 6 ways, for example, as 53787878696484 + 12468285854116 = 7334022^2 + 3531046^2 .

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, 2071987 + ... + 11696386.

Almost surely, 2^{66256164550600} is an apocalyptic number.

It is an amenable number.

66256164550600 is an abundant number, since it is smaller than the sum of its proper divisors (87795831511820).

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

66256164550600 is a wasteful number, since it uses less digits than its factorization.

66256164550600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13792450 (or 13792441 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 52.

The spelling of 66256164550600 in words is "sixty-six trillion, two hundred fifty-six billion, one hundred sixty-four million, five hundred fifty thousand, six hundred".