6855653591 has 2 divisors, whose sum is σ = 6855653592. Its totient is φ = 6855653590.

The previous prime is 6855653537. The next prime is 6855653617. The reversal of 6855653591 is 1953565586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6855653591 - 2¹⁸ = 6855391447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6855658591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3427826795 + 3427826796.

It is an arithmetic number, because the mean of its divisors is an integer number (3427826796).

Almost surely, 2^6855653591 is an apocalyptic number.

6855653591 is a deficient number, since it is larger than the sum of its proper divisors (1).

6855653591 is an equidigital number, since it uses as much as digits as its factorization.

6855653591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860000, while the sum is 53.

The square root of 6855653591 is about 82798.8743341357. The cubic root of 6855653591 is about 1899.6909553676.

The spelling of 6855653591 in words is "six billion, eight hundred fifty-five million, six hundred fifty-three thousand, five hundred ninety-one".