65105013415523 has 32 divisors (see below), whose sum is σ = 66458103117120. Its totient is φ = 63769155840000.

The previous prime is 65105013415459. The next prime is 65105013415529. The reversal of 65105013415523 is 32551431050156.

It is a cyclic number.

It is not a de Polignac number, because 65105013415523 - 2⁶ = 65105013415459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65105013415529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7431226463 + ... + 7431235223.

It is an arithmetic number, because the mean of its divisors is an integer number (2076815722410).

Almost surely, 2^{65105013415523} is an apocalyptic number.

65105013415523 is a deficient number, since it is larger than the sum of its proper divisors (1353089701597).

65105013415523 is a wasteful number, since it uses less digits than its factorization.

65105013415523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10679.

The product of its (nonzero) digits is 270000, while the sum is 41.

Adding to 65105013415523 its reverse (32551431050156), we get a palindrome (97656444465679).

The spelling of 65105013415523 in words is "sixty-five trillion, one hundred five billion, thirteen million, four hundred fifteen thousand, five hundred twenty-three".