2685218520 has 32 divisors (see below), whose sum is σ = 8055655920. Its totient is φ = 716058240.

The previous prime is 2685218483. The next prime is 2685218537. The reversal of 2685218520 is 258125862.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11188291 + ... + 11188530.

Almost surely, 2^2685218520 is an apocalyptic number.

2685218520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2685218520 is an abundant number, since it is smaller than the sum of its proper divisors (5370437400).

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

2685218520 is a wasteful number, since it uses less digits than its factorization.

2685218520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22376835 (or 22376831 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 2685218520 is about 51819.0941642171. The cubic root of 2685218520 is about 1389.9309042133.

The spelling of 2685218520 in words is "two billion, six hundred eighty-five million, two hundred eighteen thousand, five hundred twenty".