9432509561 has 2 divisors, whose sum is σ = 9432509562. Its totient is φ = 9432509560.

The previous prime is 9432509543. The next prime is 9432509623. The reversal of 9432509561 is 1659052349.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6964903936 + 2467605625 = 83456^2 + 49675^2 .

It is an emirp because it is prime and its reverse (1659052349) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9432509561 - 2⁶ = 9432509497 is a prime.

It is not a weakly prime, because it can be changed into another prime (9432209561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4716254780 + 4716254781.

It is an arithmetic number, because the mean of its divisors is an integer number (4716254781).

Almost surely, 2^9432509561 is an apocalyptic number.

It is an amenable number.

9432509561 is a deficient number, since it is larger than the sum of its proper divisors (1).

9432509561 is an equidigital number, since it uses as much as digits as its factorization.

9432509561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 44.

The square root of 9432509561 is about 97121.1077006435. The cubic root of 9432509561 is about 2112.8844717682.

The spelling of 9432509561 in words is "nine billion, four hundred thirty-two million, five hundred nine thousand, five hundred sixty-one".