6535013313121 has 4 divisors (see below), whose sum is σ = 6535026957744. Its totient is φ = 6534999668500.

The previous prime is 6535013313119. The next prime is 6535013313167. The reversal of 6535013313121 is 1213133105356.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6535013313121 - 2¹ = 6535013313119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6535013310121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6076735 + ... + 7070836.

It is an arithmetic number, because the mean of its divisors is an integer number (1633756739436).

Almost surely, 2^{6535013313121} is an apocalyptic number.

It is an amenable number.

6535013313121 is a deficient number, since it is larger than the sum of its proper divisors (13644623).

6535013313121 is a wasteful number, since it uses less digits than its factorization.

6535013313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13644622.

The product of its (nonzero) digits is 24300, while the sum is 34.

Adding to 6535013313121 its reverse (1213133105356), we get a palindrome (7748146418477).

The spelling of 6535013313121 in words is "six trillion, five hundred thirty-five billion, thirteen million, three hundred thirteen thousand, one hundred twenty-one".