5313187557581 has 8 divisors (see below), whose sum is σ = 5594828645280. Its totient is φ = 5031746433648.

The previous prime is 5313187557563. The next prime is 5313187557583. The reversal of 5313187557581 is 1857557813135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5313187557581 - 2¹⁰ = 5313187556557 is a prime.

It is a super-3 number, since 3×5313187557581³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 5313187557581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5313187557583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49936391 + ... + 50042676.

It is an arithmetic number, because the mean of its divisors is an integer number (699353580660).

Almost surely, 2^{5313187557581} is an apocalyptic number.

It is an amenable number.

5313187557581 is a deficient number, since it is larger than the sum of its proper divisors (281641087699).

5313187557581 is a wasteful number, since it uses less digits than its factorization.

5313187557581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99981883.

The product of its digits is 17640000, while the sum is 59.

The spelling of 5313187557581 in words is "five trillion, three hundred thirteen billion, one hundred eighty-seven million, five hundred fifty-seven thousand, five hundred eighty-one".