2688778341 has 16 divisors (see below), whose sum is σ = 4014745600. Its totient is φ = 1778402304.

The previous prime is 2688778321. The next prime is 2688778343. The reversal of 2688778341 is 1438778862.

It is a happy number.

It is not a de Polignac number, because 2688778341 - 2¹⁵ = 2688745573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688778343) 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, 388636 + ... + 395493.

It is an arithmetic number, because the mean of its divisors is an integer number (250921600).

Almost surely, 2^2688778341 is an apocalyptic number.

It is an amenable number.

2688778341 is a deficient number, since it is larger than the sum of its proper divisors (1325967259).

2688778341 is a wasteful number, since it uses less digits than its factorization.

2688778341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784265 (or 784259 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 54.

The square root of 2688778341 is about 51853.4313329407. The cubic root of 2688778341 is about 1390.5448480814.

The spelling of 2688778341 in words is "two billion, six hundred eighty-eight million, seven hundred seventy-eight thousand, three hundred forty-one".