65168096881 has 4 divisors (see below), whose sum is σ = 65438504164. Its totient is φ = 64897689600.

The previous prime is 65168096839. The next prime is 65168096971. The reversal of 65168096881 is 18869086156.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50258465856 + 14909631025 = 224184^2 + 122105^2 .

It is a cyclic number.

It is not a de Polignac number, because 65168096881 - 2⁹ = 65168096369 is a prime.

It is a super-2 number, since 2×65168096881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65168096381) 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 in 3 ways as a sum of consecutive naturals, for example, 135203280 + ... + 135203761.

It is an arithmetic number, because the mean of its divisors is an integer number (16359626041).

Almost surely, 2^65168096881 is an apocalyptic number.

It is an amenable number.

65168096881 is a deficient number, since it is larger than the sum of its proper divisors (270407283).

65168096881 is a wasteful number, since it uses less digits than its factorization.

65168096881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270407282.

The product of its (nonzero) digits is 4976640, while the sum is 58.

The spelling of 65168096881 in words is "sixty-five billion, one hundred sixty-eight million, ninety-six thousand, eight hundred eighty-one".