2688052391 has 2 divisors, whose sum is σ = 2688052392. Its totient is φ = 2688052390.

The previous prime is 2688052361. The next prime is 2688052447. The reversal of 2688052391 is 1932508862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2688052391 - 2⁶ = 2688052327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2688052361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344026195 + 1344026196.

It is an arithmetic number, because the mean of its divisors is an integer number (1344026196).

Almost surely, 2^2688052391 is an apocalyptic number.

2688052391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2688052391 is an equidigital number, since it uses as much as digits as its factorization.

2688052391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 2688052391 is about 51846.4308414764. The cubic root of 2688052391 is about 1390.4196912546.

The spelling of 2688052391 in words is "two billion, six hundred eighty-eight million, fifty-two thousand, three hundred ninety-one".