2685268591 has 2 divisors, whose sum is σ = 2685268592. Its totient is φ = 2685268590.

The previous prime is 2685268589. The next prime is 2685268603. The reversal of 2685268591 is 1958625862.

2685268591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2685268591 - 2¹ = 2685268589 is a prime.

It is a super-2 number, since 2×2685268591² = 14421334811622250562, which contains 22 as substring.

Together with 2685268589, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2685268511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1342634295 + 1342634296.

It is an arithmetic number, because the mean of its divisors is an integer number (1342634296).

Almost surely, 2^2685268591 is an apocalyptic number.

2685268591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2685268591 is an equidigital number, since it uses as much as digits as its factorization.

2685268591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2073600, while the sum is 52.

The square root of 2685268591 is about 51819.5772946866. The cubic root of 2685268591 is about 1389.9395434603.

The spelling of 2685268591 in words is "two billion, six hundred eighty-five million, two hundred sixty-eight thousand, five hundred ninety-one".