66430166853803 has 2 divisors, whose sum is σ = 66430166853804. Its totient is φ = 66430166853802.

The previous prime is 66430166853737. The next prime is 66430166853871. The reversal of 66430166853803 is 30835866103466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66430166853803 - 2²⁸ = 66429898418347 is a prime.

It is not a weakly prime, because it can be changed into another prime (66430166853703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33215083426901 + 33215083426902.

It is an arithmetic number, because the mean of its divisors is an integer number (33215083426902).

Almost surely, 2^{66430166853803} is an apocalyptic number.

66430166853803 is a deficient number, since it is larger than the sum of its proper divisors (1).

66430166853803 is an equidigital number, since it uses as much as digits as its factorization.

66430166853803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44789760, while the sum is 59.

The spelling of 66430166853803 in words is "sixty-six trillion, four hundred thirty billion, one hundred sixty-six million, eight hundred fifty-three thousand, eight hundred three".