6853145871 has 48 divisors (see below), whose sum is σ = 10916052480. Its totient is φ = 3790575360.

The previous prime is 6853145869. The next prime is 6853145899. The reversal of 6853145871 is 1785413586.

It is not a de Polignac number, because 6853145871 - 2¹ = 6853145869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6853145871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6853145801) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 489450 + ... + 503256.

It is an arithmetic number, because the mean of its divisors is an integer number (227417760).

Almost surely, 2^6853145871 is an apocalyptic number.

6853145871 is a deficient number, since it is larger than the sum of its proper divisors (4062906609).

6853145871 is a wasteful number, since it uses less digits than its factorization.

6853145871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13936 (or 13923 counting only the distinct ones).

The product of its digits is 806400, while the sum is 48.

The square root of 6853145871 is about 82783.7295064676. The cubic root of 6853145871 is about 1899.4592986813.

The spelling of 6853145871 in words is "six billion, eight hundred fifty-three million, one hundred forty-five thousand, eight hundred seventy-one".