666660132253 has 2 divisors, whose sum is σ = 666660132254. Its totient is φ = 666660132252.

The previous prime is 666660132241. The next prime is 666660132337. The reversal of 666660132253 is 352231066666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 433914673284 + 232745458969 = 658722^2 + 482437^2 .

It is a cyclic number.

It is not a de Polignac number, because 666660132253 - 2¹³ = 666660124061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (666660132053) 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 as a sum of consecutive naturals, namely, 333330066126 + 333330066127.

It is an arithmetic number, because the mean of its divisors is an integer number (333330066127).

Almost surely, 2^666660132253 is an apocalyptic number.

It is an amenable number.

666660132253 is a deficient number, since it is larger than the sum of its proper divisors (1).

666660132253 is an equidigital number, since it uses as much as digits as its factorization.

666660132253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1399680, while the sum is 46.

The spelling of 666660132253 in words is "six hundred sixty-six billion, six hundred sixty million, one hundred thirty-two thousand, two hundred fifty-three".