686369314518 has 32 divisors (see below), whose sum is σ = 1410784654176. Its totient is φ = 222457056768.

The previous prime is 686369314511. The next prime is 686369314531. The reversal of 686369314518 is 815413963686.

It is a super-2 number, since 2×686369314518² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686369314511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 703971 + ... + 1366862.

It is an arithmetic number, because the mean of its divisors is an integer number (44087020443).

Almost surely, 2^686369314518 is an apocalyptic number.

686369314518 is an abundant number, since it is smaller than the sum of its proper divisors (724415339658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686369314518 is a wasteful number, since it uses less digits than its factorization.

686369314518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072368.

The product of its digits is 22394880, while the sum is 60.

The spelling of 686369314518 in words is "six hundred eighty-six billion, three hundred sixty-nine million, three hundred fourteen thousand, five hundred eighteen".