8104880861 has 32 divisors (see below), whose sum is σ = 10476297216. Its totient is φ = 6087024000.

The previous prime is 8104880827. The next prime is 8104880887. The reversal of 8104880861 is 1680884018.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-8104880861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8104880801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 246566 + ... + 277496.

It is an arithmetic number, because the mean of its divisors is an integer number (327384288).

Almost surely, 2^8104880861 is an apocalyptic number.

It is an amenable number.

8104880861 is a deficient number, since it is larger than the sum of its proper divisors (2371416355).

8104880861 is a wasteful number, since it uses less digits than its factorization.

8104880861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31073.

The product of its (nonzero) digits is 98304, while the sum is 44.

The square root of 8104880861 is about 90027.1118108317. Note that the first 3 decimals coincide. The cubic root of 8104880861 is about 2008.7021530997.

The spelling of 8104880861 in words is "eight billion, one hundred four million, eight hundred eighty thousand, eight hundred sixty-one".