8005740561 has 48 divisors (see below), whose sum is σ = 14314949376. Its totient is φ = 4198324608.

The previous prime is 8005740557. The next prime is 8005740581. The reversal of 8005740561 is 1650475008.

8005740561 is a `hidden beast` number, since 8 + 0 + 0 + 57 + 40 + 561 = 666.

It is not a de Polignac number, because 8005740561 - 2² = 8005740557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8005740581) 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 47 ways as a sum of consecutive naturals, for example, 113436 + ... + 169938.

It is an arithmetic number, because the mean of its divisors is an integer number (298228112).

Almost surely, 2^8005740561 is an apocalyptic number.

It is an amenable number.

8005740561 is a deficient number, since it is larger than the sum of its proper divisors (6309208815).

8005740561 is a wasteful number, since it uses less digits than its factorization.

8005740561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56702 (or 56699 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 8005740561 is about 89474.8040567846. The cubic root of 8005740561 is about 2000.4782657052.

The spelling of 8005740561 in words is "eight billion, five million, seven hundred forty thousand, five hundred sixty-one".