8688913157893 has 4 divisors (see below), whose sum is σ = 8689316770540. Its totient is φ = 8688509545248.

The previous prime is 8688913157857. The next prime is 8688913157927. The reversal of 8688913157893 is 3987513198868.

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 4735250179969 + 3953662977924 = 2176063^2 + 1988382^2 .

It is a cyclic number.

It is not a de Polignac number, because 8688913157893 - 2²⁵ = 8688879603461 is a prime.

It is a super-2 number, since 2×8688913157893² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8688913157803) 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, 201774030 + ... + 201817087.

It is an arithmetic number, because the mean of its divisors is an integer number (2172329192635).

Almost surely, 2^{8688913157893} is an apocalyptic number.

It is an amenable number.

8688913157893 is a deficient number, since it is larger than the sum of its proper divisors (403612647).

8688913157893 is a wasteful number, since it uses less digits than its factorization.

8688913157893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403612646.

The product of its digits is 627056640, while the sum is 76.

The spelling of 8688913157893 in words is "eight trillion, six hundred eighty-eight billion, nine hundred thirteen million, one hundred fifty-seven thousand, eight hundred ninety-three".