2688216813 has 12 divisors (see below), whose sum is σ = 3940935648. Its totient is φ = 1765395720.

The previous prime is 2688216803. The next prime is 2688216827. The reversal of 2688216813 is 3186128862.

It is not a de Polignac number, because 2688216813 - 2¹² = 2688212717 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688216803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2228433 + ... + 2229638.

It is an arithmetic number, because the mean of its divisors is an integer number (328411304).

Almost surely, 2^2688216813 is an apocalyptic number.

It is an amenable number.

2688216813 is a deficient number, since it is larger than the sum of its proper divisors (1252718835).

2688216813 is a wasteful number, since it uses less digits than its factorization.

2688216813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4458144 (or 4458141 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 2688216813 is about 51848.0164808645. The cubic root of 2688216813 is about 1390.4480402712.

The spelling of 2688216813 in words is "two billion, six hundred eighty-eight million, two hundred sixteen thousand, eight hundred thirteen".