2555335886891 has 2 divisors, whose sum is σ = 2555335886892. Its totient is φ = 2555335886890.

The previous prime is 2555335886867. The next prime is 2555335886981. The reversal of 2555335886891 is 1986885335552.

2555335886891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (2555335886981) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2555335886891 is a prime.

It is not a weakly prime, because it can be changed into another prime (2555335886801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277667943445 + 1277667943446.

It is an arithmetic number, because the mean of its divisors is an integer number (1277667943446).

Almost surely, 2^{2555335886891} is an apocalyptic number.

2555335886891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555335886891 is an equidigital number, since it uses as much as digits as its factorization.

2555335886891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040000, while the sum is 68.

The spelling of 2555335886891 in words is "two trillion, five hundred fifty-five billion, three hundred thirty-five million, eight hundred eighty-six thousand, eight hundred ninety-one".