8468569561 has 4 divisors (see below), whose sum is σ = 8486860672. Its totient is φ = 8450278452.

The previous prime is 8468569559. The next prime is 8468569609. The reversal of 8468569561 is 1659658648.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8468569561 - 2¹ = 8468569559 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8468569496 and 8468569505.

It is not an unprimeable number, because it can be changed into a prime (8468561561) 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, 9144861 + ... + 9145786.

It is an arithmetic number, because the mean of its divisors is an integer number (2121715168).

Almost surely, 2^8468569561 is an apocalyptic number.

It is an amenable number.

8468569561 is a deficient number, since it is larger than the sum of its proper divisors (18291111).

8468569561 is a wasteful number, since it uses less digits than its factorization.

8468569561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18291110.

The product of its digits is 12441600, while the sum is 58.

The square root of 8468569561 is about 92024.8312196225. The cubic root of 8468569561 is about 2038.3089889773.

The spelling of 8468569561 in words is "eight billion, four hundred sixty-eight million, five hundred sixty-nine thousand, five hundred sixty-one".