605761869991 has 2 divisors, whose sum is σ = 605761869992. Its totient is φ = 605761869990.

The previous prime is 605761869967. The next prime is 605761870019. The reversal of 605761869991 is 199968167506.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 605761869991 - 2⁵ = 605761869959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (605761864991) 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, 302880934995 + 302880934996.

It is an arithmetic number, because the mean of its divisors is an integer number (302880934996).

Almost surely, 2^605761869991 is an apocalyptic number.

605761869991 is a deficient number, since it is larger than the sum of its proper divisors (1).

605761869991 is an equidigital number, since it uses as much as digits as its factorization.

605761869991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44089920, while the sum is 67.

The spelling of 605761869991 in words is "six hundred five billion, seven hundred sixty-one million, eight hundred sixty-nine thousand, nine hundred ninety-one".