66430166853703 has 2 divisors, whose sum is σ = 66430166853704. Its totient is φ = 66430166853702.

The previous prime is 66430166853671. The next prime is 66430166853709. The reversal of 66430166853703 is 30735866103466.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66430166853703 - 2⁵ = 66430166853671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66430166853709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33215083426851 + 33215083426852.

It is an arithmetic number, because the mean of its divisors is an integer number (33215083426852).

Almost surely, 2^{66430166853703} is an apocalyptic number.

66430166853703 is a deficient number, since it is larger than the sum of its proper divisors (1).

66430166853703 is an equidigital number, since it uses as much as digits as its factorization.

66430166853703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39191040, while the sum is 58.

The spelling of 66430166853703 in words is "sixty-six trillion, four hundred thirty billion, one hundred sixty-six million, eight hundred fifty-three thousand, seven hundred three".