66066524652125 has 16 divisors (see below), whose sum is σ = 82451513866800. Its totient is φ = 52852904913600.

The previous prime is 66066524652103. The next prime is 66066524652127. The reversal of 66066524652125 is 52125642566066.

It can be written as a sum of positive squares in 8 ways, for example, as 7088517530329 + 58978007121796 = 2662427^2 + 7679714^2 .

It is a de Polignac number, because none of the positive numbers 2^k-66066524652125 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66066524652127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20758559 + ... + 23728691.

It is an arithmetic number, because the mean of its divisors is an integer number (5153219616675).

Almost surely, 2^{66066524652125} is an apocalyptic number.

It is an amenable number.

66066524652125 is a deficient number, since it is larger than the sum of its proper divisors (16384989214675).

66066524652125 is a wasteful number, since it uses less digits than its factorization.

66066524652125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3148097 (or 3148087 counting only the distinct ones).

The product of its (nonzero) digits is 31104000, while the sum is 56.

The spelling of 66066524652125 in words is "sixty-six trillion, sixty-six billion, five hundred twenty-four million, six hundred fifty-two thousand, one hundred twenty-five".