66417404143 has 2 divisors, whose sum is σ = 66417404144. Its totient is φ = 66417404142.

The previous prime is 66417404111. The next prime is 66417404177. The reversal of 66417404143 is 34140471466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66417404143 - 2⁵ = 66417404111 is a prime.

It is a super-2 number, since 2×66417404143² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66417404096 and 66417404105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66417404243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33208702071 + 33208702072.

It is an arithmetic number, because the mean of its divisors is an integer number (33208702072).

Almost surely, 2^66417404143 is an apocalyptic number.

66417404143 is a deficient number, since it is larger than the sum of its proper divisors (1).

66417404143 is an equidigital number, since it uses as much as digits as its factorization.

66417404143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 66417404143 in words is "sixty-six billion, four hundred seventeen million, four hundred four thousand, one hundred forty-three".