2688135299 has 4 divisors (see below), whose sum is σ = 2689639680. Its totient is φ = 2686630920.

The previous prime is 2688135293. The next prime is 2688135311. The reversal of 2688135299 is 9925318862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2688135299 is a prime.

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 2688135299.

It is not an unprimeable number, because it can be changed into a prime (2688135293) 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, 749507 + ... + 753084.

It is an arithmetic number, because the mean of its divisors is an integer number (672409920).

Almost surely, 2^2688135299 is an apocalyptic number.

2688135299 is a deficient number, since it is larger than the sum of its proper divisors (1504381).

2688135299 is a wasteful number, since it uses less digits than its factorization.

2688135299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504380.

The product of its digits is 1866240, while the sum is 53.

The square root of 2688135299 is about 51847.2303889031. The cubic root of 2688135299 is about 1390.4339860815.

The spelling of 2688135299 in words is "two billion, six hundred eighty-eight million, one hundred thirty-five thousand, two hundred ninety-nine".