68013325253 has 4 divisors (see below), whose sum is σ = 68015510988. Its totient is φ = 68011139520.

The previous prime is 68013325169. The next prime is 68013325327. The reversal of 68013325253 is 35252331086.

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 49447082689 + 18566242564 = 222367^2 + 136258^2 .

It is a cyclic number.

It is not a de Polignac number, because 68013325253 - 2²⁰ = 68012276677 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 (68013325453) 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, 1045508 + ... + 1108653.

It is an arithmetic number, because the mean of its divisors is an integer number (17003877747).

Almost surely, 2^68013325253 is an apocalyptic number.

It is an amenable number.

68013325253 is a deficient number, since it is larger than the sum of its proper divisors (2185735).

68013325253 is a wasteful number, since it uses less digits than its factorization.

68013325253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2185734.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 68013325253 in words is "sixty-eight billion, thirteen million, three hundred twenty-five thousand, two hundred fifty-three".