8261471868 has 48 divisors (see below), whose sum is σ = 20766090240. Its totient is φ = 2541196224.

The previous prime is 8261471849. The next prime is 8261471887. The reversal of 8261471868 is 8681741628.

It is an interprime number because it is at equal distance from previous prime (8261471849) and next prime (8261471887).

It is a self number, because there is not a number n which added to its sum of digits gives 8261471868.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 668893 + ... + 681131.

It is an arithmetic number, because the mean of its divisors is an integer number (432626880).

Almost surely, 2^8261471868 is an apocalyptic number.

It is an amenable number.

8261471868 is an abundant number, since it is smaller than the sum of its proper divisors (12504618372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8261471868 is a wasteful number, since it uses less digits than its factorization.

8261471868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16586 (or 16584 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 51.

The square root of 8261471868 is about 90892.6392399297. The cubic root of 8261471868 is about 2021.5561537470.

The spelling of 8261471868 in words is "eight billion, two hundred sixty-one million, four hundred seventy-one thousand, eight hundred sixty-eight".