666301535012 has 6 divisors (see below), whose sum is σ = 1166027686278. Its totient is φ = 333150767504.

The previous prime is 666301534957. The next prime is 666301535027. The reversal of 666301535012 is 210535103666.

It can be written as a sum of positive squares in only one way, i.e., 575859393316 + 90442141696 = 758854^2 + 300736^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83287691873 + ... + 83287691880.

It is an arithmetic number, because the mean of its divisors is an integer number (194337947713).

Almost surely, 2^666301535012 is an apocalyptic number.

It is an amenable number.

666301535012 is a deficient number, since it is larger than the sum of its proper divisors (499726151266).

666301535012 is a wasteful number, since it uses less digits than its factorization.

666301535012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166575383757 (or 166575383755 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 38.

Adding to 666301535012 its reverse (210535103666), we get a palindrome (876836638678).

The spelling of 666301535012 in words is "six hundred sixty-six billion, three hundred one million, five hundred thirty-five thousand, twelve".