42986955689 has 2 divisors, whose sum is σ = 42986955690. Its totient is φ = 42986955688.

The previous prime is 42986955673. The next prime is 42986955719. The reversal of 42986955689 is 98655968924.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42915265600 + 71690089 = 207160^2 + 8467^2 .

It is a cyclic number.

It is not a de Polignac number, because 42986955689 - 2⁴ = 42986955673 is a prime.

It is not a weakly prime, because it can be changed into another prime (42986958689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21493477844 + 21493477845.

It is an arithmetic number, because the mean of its divisors is an integer number (21493477845).

Almost surely, 2^42986955689 is an apocalyptic number.

It is an amenable number.

42986955689 is a deficient number, since it is larger than the sum of its proper divisors (1).

42986955689 is an equidigital number, since it uses as much as digits as its factorization.

42986955689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 335923200, while the sum is 71.

The spelling of 42986955689 in words is "forty-two billion, nine hundred eighty-six million, nine hundred fifty-five thousand, six hundred eighty-nine".