65330928881 has 2 divisors, whose sum is σ = 65330928882. Its totient is φ = 65330928880.

The previous prime is 65330928877. The next prime is 65330928967. The reversal of 65330928881 is 18882903356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55025430625 + 10305498256 = 234575^2 + 101516^2 .

It is a cyclic number.

It is not a de Polignac number, because 65330928881 - 2² = 65330928877 is a prime.

It is a super-2 number, since 2×65330928881² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65330928781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32665464440 + 32665464441.

It is an arithmetic number, because the mean of its divisors is an integer number (32665464441).

Almost surely, 2^65330928881 is an apocalyptic number.

It is an amenable number.

65330928881 is a deficient number, since it is larger than the sum of its proper divisors (1).

65330928881 is an equidigital number, since it uses as much as digits as its factorization.

65330928881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 65330928881 in words is "sixty-five billion, three hundred thirty million, nine hundred twenty-eight thousand, eight hundred eighty-one".