40640062289 has 2 divisors, whose sum is σ = 40640062290. Its totient is φ = 40640062288.

The previous prime is 40640062223. The next prime is 40640062291. The reversal of 40640062289 is 98226004604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40548668689 + 91393600 = 201367^2 + 9560^2 .

It is a cyclic number.

It is not a de Polignac number, because 40640062289 - 2²⁰ = 40639013713 is a prime.

It is a super-2 number, since 2×40640062289² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 40640062291, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40640065289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20320031144 + 20320031145.

It is an arithmetic number, because the mean of its divisors is an integer number (20320031145).

Almost surely, 2^40640062289 is an apocalyptic number.

It is an amenable number.

40640062289 is a deficient number, since it is larger than the sum of its proper divisors (1).

40640062289 is an equidigital number, since it uses as much as digits as its factorization.

40640062289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 40640062289 in words is "forty billion, six hundred forty million, sixty-two thousand, two hundred eighty-nine".