6465852883181 has 2 divisors, whose sum is σ = 6465852883182. Its totient is φ = 6465852883180.

The previous prime is 6465852883123. The next prime is 6465852883277. The reversal of 6465852883181 is 1813882585646.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4394746213225 + 2071106669956 = 2096365^2 + 1439134^2 .

It is a cyclic number.

It is not a de Polignac number, because 6465852883181 - 2⁶ = 6465852883117 is a prime.

It is a super-2 number, since 2×6465852883181² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6465852883111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3232926441590 + 3232926441591.

It is an arithmetic number, because the mean of its divisors is an integer number (3232926441591).

Almost surely, 2^{6465852883181} is an apocalyptic number.

It is an amenable number.

6465852883181 is a deficient number, since it is larger than the sum of its proper divisors (1).

6465852883181 is an equidigital number, since it uses as much as digits as its factorization.

6465852883181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88473600, while the sum is 65.

The spelling of 6465852883181 in words is "six trillion, four hundred sixty-five billion, eight hundred fifty-two million, eight hundred eighty-three thousand, one hundred eighty-one".