6861841040 has 20 divisors (see below), whose sum is σ = 15953780604. Its totient is φ = 2744736384.

The previous prime is 6861841037. The next prime is 6861841067. The reversal of 6861841040 is 401481686.

It can be written as a sum of positive squares in 2 ways, for example, as 4820247184 + 2041593856 = 69428^2 + 45184^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 6861840985 and 6861841003.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 42886427 + ... + 42886586.

Almost surely, 2^6861841040 is an apocalyptic number.

It is an amenable number.

6861841040 is an abundant number, since it is smaller than the sum of its proper divisors (9091939564).

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

6861841040 is a wasteful number, since it uses less digits than its factorization.

6861841040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85773026 (or 85773020 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 6861841040 is about 82836.2302377408. The cubic root of 6861841040 is about 1900.2622943519.

The spelling of 6861841040 in words is "six billion, eight hundred sixty-one million, eight hundred forty-one thousand, forty".