8709125861 has 8 divisors (see below), whose sum is σ = 8753754240. Its totient is φ = 8664585232.

The previous prime is 8709125849. The next prime is 8709125863. The reversal of 8709125861 is 1685219078.

8709125861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8709125861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8709125863) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 181880 + ... + 224718.

It is an arithmetic number, because the mean of its divisors is an integer number (1094219280).

Almost surely, 2^8709125861 is an apocalyptic number.

It is an amenable number.

8709125861 is a deficient number, since it is larger than the sum of its proper divisors (44628379).

8709125861 is a wasteful number, since it uses less digits than its factorization.

8709125861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43875.

The product of its (nonzero) digits is 241920, while the sum is 47.

The square root of 8709125861 is about 93322.6974588712. The cubic root of 8709125861 is about 2057.4289932862.

The spelling of 8709125861 in words is "eight billion, seven hundred nine million, one hundred twenty-five thousand, eight hundred sixty-one".