9568543961 has 4 divisors (see below), whose sum is σ = 9801923124. Its totient is φ = 9335164800.

The previous prime is 9568543921. The next prime is 9568543969. The reversal of 9568543961 is 1693458659.

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 2987278336 + 6581265625 = 54656^2 + 81125^2 .

It is a cyclic number.

It is not a de Polignac number, because 9568543961 - 2¹⁸ = 9568281817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9568543897 and 9568543906.

It is not an unprimeable number, because it can be changed into a prime (9568543969) 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, 116689520 + ... + 116689601.

It is an arithmetic number, because the mean of its divisors is an integer number (2450480781).

Almost surely, 2^9568543961 is an apocalyptic number.

It is an amenable number.

9568543961 is a deficient number, since it is larger than the sum of its proper divisors (233379163).

9568543961 is a wasteful number, since it uses less digits than its factorization.

9568543961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233379162.

The product of its digits is 6998400, while the sum is 56.

The square root of 9568543961 is about 97818.9345730161. The cubic root of 9568543961 is about 2122.9932768519.

The spelling of 9568543961 in words is "nine billion, five hundred sixty-eight million, five hundred forty-three thousand, nine hundred sixty-one".