6871855519 has 2 divisors, whose sum is σ = 6871855520. Its totient is φ = 6871855518.

The previous prime is 6871855513. The next prime is 6871855537. The reversal of 6871855519 is 9155581786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6871855519 - 2⁷ = 6871855391 is a prime.

It is a super-2 number, since 2×6871855519² = 94444796548021518722, which contains 22 as substring.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 6871855519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6871855513) 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, 3435927759 + 3435927760.

It is an arithmetic number, because the mean of its divisors is an integer number (3435927760).

Almost surely, 2^6871855519 is an apocalyptic number.

6871855519 is a deficient number, since it is larger than the sum of its proper divisors (1).

6871855519 is an equidigital number, since it uses as much as digits as its factorization.

6871855519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024000, while the sum is 55.

The square root of 6871855519 is about 82896.6556563050. The cubic root of 6871855519 is about 1901.1862877048.

The spelling of 6871855519 in words is "six billion, eight hundred seventy-one million, eight hundred fifty-five thousand, five hundred nineteen".