8661078017 has 8 divisors (see below), whose sum is σ = 8864264640. Its totient is φ = 8457971760.

The previous prime is 8661077983. The next prime is 8661078059. The reversal of 8661078017 is 7108701668.

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-8661078017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8661008017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235667 + ... + 269927.

It is an arithmetic number, because the mean of its divisors is an integer number (1108033080).

Almost surely, 2^8661078017 is an apocalyptic number.

It is an amenable number.

8661078017 is a deficient number, since it is larger than the sum of its proper divisors (203186623).

8661078017 is a wasteful number, since it uses less digits than its factorization.

8661078017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40183.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 8661078017 is about 93064.9129210359. The cubic root of 8661078017 is about 2053.6384337816.

The spelling of 8661078017 in words is "eight billion, six hundred sixty-one million, seventy-eight thousand, seventeen".