8665145361 has 24 divisors (see below), whose sum is σ = 13258070280. Its totient is φ = 5434699776.

The previous prime is 8665145351. The next prime is 8665145399. The reversal of 8665145361 is 1635415668.

8665145361 is a `hidden beast` number, since 8 + 66 + 51 + 4 + 536 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3925649025 + 4739496336 = 62655^2 + 68844^2 .

It is not a de Polignac number, because 8665145361 - 2⁶ = 8665145297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8665145351) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 407161 + ... + 427913.

It is an arithmetic number, because the mean of its divisors is an integer number (552419595).

Almost surely, 2^8665145361 is an apocalyptic number.

It is an amenable number.

8665145361 is a deficient number, since it is larger than the sum of its proper divisors (4592924919).

8665145361 is a wasteful number, since it uses less digits than its factorization.

8665145361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23505 (or 23502 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 8665145361 is about 93086.7625444134. The cubic root of 8665145361 is about 2053.9598543851.

The spelling of 8665145361 in words is "eight billion, six hundred sixty-five million, one hundred forty-five thousand, three hundred sixty-one".