6856081459 has 4 divisors (see below), whose sum is σ = 7023303000. Its totient is φ = 6688859920.

The previous prime is 6856081457. The next prime is 6856081471. The reversal of 6856081459 is 9541806586.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6856081459 - 2¹ = 6856081457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6856081451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83610709 + ... + 83610790.

It is an arithmetic number, because the mean of its divisors is an integer number (1755825750).

Almost surely, 2^6856081459 is an apocalyptic number.

6856081459 is a deficient number, since it is larger than the sum of its proper divisors (167221541).

6856081459 is a wasteful number, since it uses less digits than its factorization.

6856081459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167221540.

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

The square root of 6856081459 is about 82801.4580729108. The cubic root of 6856081459 is about 1899.7304750647.

The spelling of 6856081459 in words is "six billion, eight hundred fifty-six million, eighty-one thousand, four hundred fifty-nine".