8061861840008 has 16 divisors (see below), whose sum is σ = 15116056273500. Its totient is φ = 4030913500416.

The previous prime is 8061861839951. The next prime is 8061861840023. The reversal of 8061861840008 is 8000481681608.

It can be written as a sum of positive squares in 2 ways, for example, as 8056843817764 + 5018022244 = 2838458^2 + 70838^2 .

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, 93173 + ... + 4016516.

Almost surely, 2^{8061861840008} is an apocalyptic number.

It is an amenable number.

8061861840008 is a deficient number, since it is larger than the sum of its proper divisors (7054194433492).

8061861840008 is a wasteful number, since it uses less digits than its factorization.

8061861840008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4354904 (or 4354900 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 50.

The spelling of 8061861840008 in words is "eight trillion, sixty-one billion, eight hundred sixty-one million, eight hundred forty thousand, eight".