65613265170253 has 4 divisors (see below), whose sum is σ = 66688892468188. Its totient is φ = 64537637872320.

The previous prime is 65613265170241. The next prime is 65613265170259. The reversal of 65613265170253 is 35207156231656.

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 32524516962729 + 33088748207524 = 5703027^2 + 5752282^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65613265170253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65613265170253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65613265170259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537813648876 + ... + 537813648997.

It is an arithmetic number, because the mean of its divisors is an integer number (16672223117047).

Almost surely, 2^{65613265170253} is an apocalyptic number.

It is an amenable number.

65613265170253 is a deficient number, since it is larger than the sum of its proper divisors (1075627297935).

65613265170253 is a wasteful number, since it uses less digits than its factorization.

65613265170253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075627297934.

The product of its (nonzero) digits is 6804000, while the sum is 52.

The spelling of 65613265170253 in words is "sixty-five trillion, six hundred thirteen billion, two hundred sixty-five million, one hundred seventy thousand, two hundred fifty-three".