101650500065 has 4 divisors (see below), whose sum is σ = 121980600084. Its totient is φ = 81320400048.

The previous prime is 101650500047. The next prime is 101650500073. The reversal of 101650500065 is 560005056101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560005056101 = 1621 ⋅345468881.

It can be written as a sum of positive squares in 2 ways, for example, as 24408750289 + 77241749776 = 156233^2 + 277924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101650500065 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10165050002 + ... + 10165050011.

It is an arithmetic number, because the mean of its divisors is an integer number (30495150021).

Almost surely, 2^101650500065 is an apocalyptic number.

It is an amenable number.

101650500065 is a deficient number, since it is larger than the sum of its proper divisors (20330100019).

101650500065 is an equidigital number, since it uses as much as digits as its factorization.

101650500065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20330100018.

The product of its (nonzero) digits is 4500, while the sum is 29.

Adding to 101650500065 its reverse (560005056101), we get a palindrome (661655556166).

The spelling of 101650500065 in words is "one hundred one billion, six hundred fifty million, five hundred thousand, sixty-five".