63611132009 has 2 divisors, whose sum is σ = 63611132010. Its totient is φ = 63611132008.

The previous prime is 63611131973. The next prime is 63611132017. The reversal of 63611132009 is 90023111636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63506520025 + 104611984 = 252005^2 + 10228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63611132009 is a prime.

It is a super-2 number, since 2×63611132009² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (63611132059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31805566004 + 31805566005.

It is an arithmetic number, because the mean of its divisors is an integer number (31805566005).

Almost surely, 2^63611132009 is an apocalyptic number.

It is an amenable number.

63611132009 is a deficient number, since it is larger than the sum of its proper divisors (1).

63611132009 is an equidigital number, since it uses as much as digits as its factorization.

63611132009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The spelling of 63611132009 in words is "sixty-three billion, six hundred eleven million, one hundred thirty-two thousand, nine".