8516727761 has 4 divisors (see below), whose sum is σ = 8517049524. Its totient is φ = 8516406000.

The previous prime is 8516727727. The next prime is 8516727839. The reversal of 8516727761 is 1677276158.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1707342400 + 6809385361 = 41320^2 + 82519^2 .

It is a cyclic number.

It is not a de Polignac number, because 8516727761 - 2²² = 8512533457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8516727701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117230 + ... + 175431.

It is an arithmetic number, because the mean of its divisors is an integer number (2129262381).

Almost surely, 2^8516727761 is an apocalyptic number.

It is an amenable number.

8516727761 is a deficient number, since it is larger than the sum of its proper divisors (321763).

8516727761 is a wasteful number, since it uses less digits than its factorization.

8516727761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321762.

The product of its digits is 987840, while the sum is 50.

The square root of 8516727761 is about 92286.1190049728. The cubic root of 8516727761 is about 2042.1654374468.

The spelling of 8516727761 in words is "eight billion, five hundred sixteen million, seven hundred twenty-seven thousand, seven hundred sixty-one".