66707044429 has 2 divisors, whose sum is σ = 66707044430. Its totient is φ = 66707044428.

The previous prime is 66707044423. The next prime is 66707044457. The reversal of 66707044429 is 92444070766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62837955625 + 3869088804 = 250675^2 + 62202^2 .

It is a cyclic number.

It is not a de Polignac number, because 66707044429 - 2¹⁵ = 66707011661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66707044423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33353522214 + 33353522215.

It is an arithmetic number, because the mean of its divisors is an integer number (33353522215).

Almost surely, 2^66707044429 is an apocalyptic number.

It is an amenable number.

66707044429 is a deficient number, since it is larger than the sum of its proper divisors (1).

66707044429 is an equidigital number, since it uses as much as digits as its factorization.

66707044429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 49.

The spelling of 66707044429 in words is "sixty-six billion, seven hundred seven million, forty-four thousand, four hundred twenty-nine".