66707044471 has 2 divisors, whose sum is σ = 66707044472. Its totient is φ = 66707044470.

The previous prime is 66707044457. The next prime is 66707044519. The reversal of 66707044471 is 17444070766.

66707044471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66707044471 - 2⁷ = 66707044343 is a prime.

It is a super-3 number, since 3×66707044471³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66707044571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33353522235 + 33353522236.

It is an arithmetic number, because the mean of its divisors is an integer number (33353522236).

Almost surely, 2^66707044471 is an apocalyptic number.

66707044471 is a deficient number, since it is larger than the sum of its proper divisors (1).

66707044471 is an equidigital number, since it uses as much as digits as its factorization.

66707044471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 790272, while the sum is 46.

The spelling of 66707044471 in words is "sixty-six billion, seven hundred seven million, forty-four thousand, four hundred seventy-one".