640000606111 has 2 divisors, whose sum is σ = 640000606112. Its totient is φ = 640000606110.

The previous prime is 640000606097. The next prime is 640000606117. The reversal of 640000606111 is 111606000046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 640000606111 - 2⁵ = 640000606079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (640000606117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320000303055 + 320000303056.

It is an arithmetic number, because the mean of its divisors is an integer number (320000303056).

Almost surely, 2^640000606111 is an apocalyptic number.

640000606111 is a deficient number, since it is larger than the sum of its proper divisors (1).

640000606111 is an equidigital number, since it uses as much as digits as its factorization.

640000606111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 640000606111 its reverse (111606000046), we get a palindrome (751606606157).

The spelling of 640000606111 in words is "six hundred forty billion, six hundred six thousand, one hundred eleven".