66430777043 has 2 divisors, whose sum is σ = 66430777044. Its totient is φ = 66430777042.

The previous prime is 66430777031. The next prime is 66430777051. The reversal of 66430777043 is 34077703466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66430777043 - 2⁴ = 66430777027 is a prime.

It is not a weakly prime, because it can be changed into another prime (66430777093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33215388521 + 33215388522.

It is an arithmetic number, because the mean of its divisors is an integer number (33215388522).

Almost surely, 2^66430777043 is an apocalyptic number.

66430777043 is a deficient number, since it is larger than the sum of its proper divisors (1).

66430777043 is an equidigital number, since it uses as much as digits as its factorization.

66430777043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1778112, while the sum is 47.

The spelling of 66430777043 in words is "sixty-six billion, four hundred thirty million, seven hundred seventy-seven thousand, forty-three".