66052565257600 has 48 divisors (see below), whose sum is σ = 163170477620820. Its totient is φ = 26421026101760.

The previous prime is 66052565257597. The next prime is 66052565257607. The reversal of 66052565257600 is 675256525066.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66052565257607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10320710122 + ... + 10320716521.

Almost surely, 2^{66052565257600} is an apocalyptic number.

It is an amenable number.

66052565257600 is an abundant number, since it is smaller than the sum of its proper divisors (97117912363220).

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

66052565257600 is a wasteful number, since it uses less digits than its factorization.

66052565257600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20641426667 (or 20641426650 counting only the distinct ones).

The product of its (nonzero) digits is 22680000, while the sum is 55.

The spelling of 66052565257600 in words is "sixty-six trillion, fifty-two billion, five hundred sixty-five million, two hundred fifty-seven thousand, six hundred".