65660481101 has 2 divisors, whose sum is σ = 65660481102. Its totient is φ = 65660481100.

The previous prime is 65660481091. The next prime is 65660481203. The reversal of 65660481101 is 10118406656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56298951076 + 9361530025 = 237274^2 + 96755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65660481101 is a prime.

It is a super-2 number, since 2×65660481101² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65660481401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32830240550 + 32830240551.

It is an arithmetic number, because the mean of its divisors is an integer number (32830240551).

Almost surely, 2^65660481101 is an apocalyptic number.

It is an amenable number.

65660481101 is a deficient number, since it is larger than the sum of its proper divisors (1).

65660481101 is an equidigital number, since it uses as much as digits as its factorization.

65660481101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 38.

Adding to 65660481101 its reverse (10118406656), we get a palindrome (75778887757).

The spelling of 65660481101 in words is "sixty-five billion, six hundred sixty million, four hundred eighty-one thousand, one hundred one".