1666652702753 has 2 divisors, whose sum is σ = 1666652702754. Its totient is φ = 1666652702752.

The previous prime is 1666652702749. The next prime is 1666652702831. The reversal of 1666652702753 is 3572072566661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1260293626384 + 406359076369 = 1122628^2 + 637463^2 .

It is a cyclic number.

It is not a de Polignac number, because 1666652702753 - 2² = 1666652702749 is a prime.

It is not a weakly prime, because it can be changed into another prime (1666652702653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 833326351376 + 833326351377.

It is an arithmetic number, because the mean of its divisors is an integer number (833326351377).

Almost surely, 2^{1666652702753} is an apocalyptic number.

It is an amenable number.

1666652702753 is a deficient number, since it is larger than the sum of its proper divisors (1).

1666652702753 is an equidigital number, since it uses as much as digits as its factorization.

1666652702753 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19051200, while the sum is 56.

The spelling of 1666652702753 in words is "one trillion, six hundred sixty-six billion, six hundred fifty-two million, seven hundred two thousand, seven hundred fifty-three".