8640115361 has 8 divisors (see below), whose sum is σ = 8852949000. Its totient is φ = 8427381760.

The previous prime is 8640115339. The next prime is 8640115403. The reversal of 8640115361 is 1635110468.

It can be written as a sum of positive squares in 4 ways, for example, as 1790897761 + 6849217600 = 42319^2 + 82760^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 8640115361 - 2¹⁴ = 8640098977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8640115061) 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, 167945 + ... + 213273.

It is an arithmetic number, because the mean of its divisors is an integer number (1106618625).

Almost surely, 2^8640115361 is an apocalyptic number.

It is an amenable number.

8640115361 is a deficient number, since it is larger than the sum of its proper divisors (212833639).

8640115361 is a wasteful number, since it uses less digits than its factorization.

8640115361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50019.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 8640115361 is about 92952.2208502842. The cubic root of 8640115361 is about 2051.9802685888.

The spelling of 8640115361 in words is "eight billion, six hundred forty million, one hundred fifteen thousand, three hundred sixty-one".