605863808831 has 2 divisors, whose sum is σ = 605863808832. Its totient is φ = 605863808830.

The previous prime is 605863808827. The next prime is 605863808857. The reversal of 605863808831 is 138808368506.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 605863808831 - 2² = 605863808827 is a prime.

It is a super-2 number, since 2×605863808831² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (605863808821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302931904415 + 302931904416.

It is an arithmetic number, because the mean of its divisors is an integer number (302931904416).

Almost surely, 2^605863808831 is an apocalyptic number.

605863808831 is a deficient number, since it is larger than the sum of its proper divisors (1).

605863808831 is an equidigital number, since it uses as much as digits as its factorization.

605863808831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6635520, while the sum is 56.

The spelling of 605863808831 in words is "six hundred five billion, eight hundred sixty-three million, eight hundred eight thousand, eight hundred thirty-one".