65107985017 has 2 divisors, whose sum is σ = 65107985018. Its totient is φ = 65107985016.

The previous prime is 65107985009. The next prime is 65107985021. The reversal of 65107985017 is 71058970156.

It is a happy number.

65107985017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55418338921 + 9689646096 = 235411^2 + 98436^2 .

It is a cyclic number.

It is not a de Polignac number, because 65107985017 - 2³ = 65107985009 is a prime.

It is not a weakly prime, because it can be changed into another prime (65107985087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32553992508 + 32553992509.

It is an arithmetic number, because the mean of its divisors is an integer number (32553992509).

Almost surely, 2^65107985017 is an apocalyptic number.

It is an amenable number.

65107985017 is a deficient number, since it is larger than the sum of its proper divisors (1).

65107985017 is an equidigital number, since it uses as much as digits as its factorization.

65107985017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 529200, while the sum is 49.

The spelling of 65107985017 in words is "sixty-five billion, one hundred seven million, nine hundred eighty-five thousand, seventeen".