1666958898083 has 2 divisors, whose sum is σ = 1666958898084. Its totient is φ = 1666958898082.

The previous prime is 1666958898061. The next prime is 1666958898109. The reversal of 1666958898083 is 3808988596661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1666958898083 - 2¹⁴ = 1666958881699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1666958897995 and 1666958898013.

It is not a weakly prime, because it can be changed into another prime (1666958898883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 833479449041 + 833479449042.

It is an arithmetic number, because the mean of its divisors is an integer number (833479449042).

Almost surely, 2^{1666958898083} is an apocalyptic number.

1666958898083 is a deficient number, since it is larger than the sum of its proper divisors (1).

1666958898083 is an equidigital number, since it uses as much as digits as its factorization.

1666958898083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1074954240, while the sum is 77.

The spelling of 1666958898083 in words is "one trillion, six hundred sixty-six billion, nine hundred fifty-eight million, eight hundred ninety-eight thousand, eighty-three".