9465886561 has 2 divisors, whose sum is σ = 9465886562. Its totient is φ = 9465886560.

The previous prime is 9465886559. The next prime is 9465886589. The reversal of 9465886561 is 1656885649.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7364214225 + 2101672336 = 85815^2 + 45844^2 .

It is an emirp because it is prime and its reverse (1656885649) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9465886561 - 2¹ = 9465886559 is a prime.

Together with 9465886559, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 9465886496 and 9465886505.

It is not a weakly prime, because it can be changed into another prime (9465886541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4732943280 + 4732943281.

It is an arithmetic number, because the mean of its divisors is an integer number (4732943281).

Almost surely, 2^9465886561 is an apocalyptic number.

It is an amenable number.

9465886561 is a deficient number, since it is larger than the sum of its proper divisors (1).

9465886561 is an equidigital number, since it uses as much as digits as its factorization.

9465886561 is an evil number, because the sum of its binary digits is even.

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

The square root of 9465886561 is about 97292.7878159527. The cubic root of 9465886561 is about 2115.3736901158.

The spelling of 9465886561 in words is "nine billion, four hundred sixty-five million, eight hundred eighty-six thousand, five hundred sixty-one".