8661161758 has 8 divisors (see below), whose sum is σ = 13005730080. Its totient is φ = 4325918400.

The previous prime is 8661161731. The next prime is 8661161771. The reversal of 8661161758 is 8571611668.

It is a happy number.

8661161758 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 congruent number.

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, 2328918 + ... + 2332633.

It is an arithmetic number, because the mean of its divisors is an integer number (1625716260).

Almost surely, 2^8661161758 is an apocalyptic number.

8661161758 is a deficient number, since it is larger than the sum of its proper divisors (4344568322).

8661161758 is a wasteful number, since it uses less digits than its factorization.

8661161758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4662482.

The product of its digits is 483840, while the sum is 49.

The square root of 8661161758 is about 93065.3628263491. The cubic root of 8661161758 is about 2053.6450524027.

The spelling of 8661161758 in words is "eight billion, six hundred sixty-one million, one hundred sixty-one thousand, seven hundred fifty-eight".