60643666009 has 2 divisors, whose sum is σ = 60643666010. Its totient is φ = 60643666008.

The previous prime is 60643666003. The next prime is 60643666079. The reversal of 60643666009 is 90066634606.

60643666009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59143808025 + 1499857984 = 243195^2 + 38728^2 .

It is a cyclic number.

It is not a de Polignac number, because 60643666009 - 2¹⁹ = 60643141721 is a prime.

It is a super-2 number, since 2×60643666009² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 60643666009.

It is not a weakly prime, because it can be changed into another prime (60643666003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30321833004 + 30321833005.

It is an arithmetic number, because the mean of its divisors is an integer number (30321833005).

Almost surely, 2^60643666009 is an apocalyptic number.

It is an amenable number.

60643666009 is a deficient number, since it is larger than the sum of its proper divisors (1).

60643666009 is an equidigital number, since it uses as much as digits as its factorization.

60643666009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 46.

The spelling of 60643666009 in words is "sixty billion, six hundred forty-three million, six hundred sixty-six thousand, nine".