42577666009 has 2 divisors, whose sum is σ = 42577666010. Its totient is φ = 42577666008.

The previous prime is 42577665943. The next prime is 42577666093. The reversal of 42577666009 is 90066677524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42375457609 + 202208400 = 205853^2 + 14220^2 .

It is a cyclic number.

It is not a de Polignac number, because 42577666009 - 2³³ = 33987731417 is a prime.

It is not a weakly prime, because it can be changed into another prime (42577666909) 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, 21288833004 + 21288833005.

It is an arithmetic number, because the mean of its divisors is an integer number (21288833005).

Almost surely, 2^42577666009 is an apocalyptic number.

It is an amenable number.

42577666009 is a deficient number, since it is larger than the sum of its proper divisors (1).

42577666009 is an equidigital number, since it uses as much as digits as its factorization.

42577666009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 42577666009 in words is "forty-two billion, five hundred seventy-seven million, six hundred sixty-six thousand, nine".