2688119257 has 4 divisors (see below), whose sum is σ = 2720506320. Its totient is φ = 2655732196.

The previous prime is 2688119251. The next prime is 2688119311. The reversal of 2688119257 is 7529118862.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2688119257 - 2⁷ = 2688119129 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 2688119257.

It is not an unprimeable number, because it can be changed into a prime (2688119251) 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, 16193407 + ... + 16193572.

It is an arithmetic number, because the mean of its divisors is an integer number (680126580).

Almost surely, 2^2688119257 is an apocalyptic number.

It is an amenable number.

2688119257 is a deficient number, since it is larger than the sum of its proper divisors (32387063).

2688119257 is an equidigital number, since it uses as much as digits as its factorization.

2688119257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32387062.

The product of its digits is 483840, while the sum is 49.

The square root of 2688119257 is about 51847.0756841695. The cubic root of 2688119257 is about 1390.4312201758.

The spelling of 2688119257 in words is "two billion, six hundred eighty-eight million, one hundred nineteen thousand, two hundred fifty-seven".