5165421376613 has 4 divisors (see below), whose sum is σ = 5165570300748. Its totient is φ = 5165272452480.

The previous prime is 5165421376597. The next prime is 5165421376631. The reversal of 5165421376613 is 3166731245615.

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 3200832293569 + 1964589083044 = 1789087^2 + 1401638^2 .

It is a cyclic number.

It is not a de Polignac number, because 5165421376613 - 2⁴ = 5165421376597 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 (5165421376663) 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, 74410028 + ... + 74479413.

It is an arithmetic number, because the mean of its divisors is an integer number (1291392575187).

Almost surely, 2^{5165421376613} is an apocalyptic number.

It is an amenable number.

5165421376613 is a deficient number, since it is larger than the sum of its proper divisors (148924135).

5165421376613 is a wasteful number, since it uses less digits than its factorization.

5165421376613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148924134.

The product of its digits is 2721600, while the sum is 50.

The spelling of 5165421376613 in words is "five trillion, one hundred sixty-five billion, four hundred twenty-one million, three hundred seventy-six thousand, six hundred thirteen".