65500015155013 has 4 divisors (see below), whose sum is σ = 65507075638060. Its totient is φ = 65492954671968.

The previous prime is 65500015155011. The next prime is 65500015155089. The reversal of 65500015155013 is 31055151000556.

65500015155013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20857278918529 + 44642736236484 = 4566977^2 + 6681522^2 .

It is a cyclic number.

It is not a de Polignac number, because 65500015155013 - 2¹ = 65500015155011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65500015155011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3530227608 + ... + 3530246161.

It is an arithmetic number, because the mean of its divisors is an integer number (16376768909515).

Almost surely, 2^{65500015155013} is an apocalyptic number.

It is an amenable number.

65500015155013 is a deficient number, since it is larger than the sum of its proper divisors (7060483047).

65500015155013 is an equidigital number, since it uses as much as digits as its factorization.

65500015155013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7060483046.

The product of its (nonzero) digits is 56250, while the sum is 37.

Adding to 65500015155013 its reverse (31055151000556), we get a palindrome (96555166155569).

The spelling of 65500015155013 in words is "sixty-five trillion, five hundred billion, fifteen million, one hundred fifty-five thousand, thirteen".