65660432287 has 2 divisors, whose sum is σ = 65660432288. Its totient is φ = 65660432286.

The previous prime is 65660432263. The next prime is 65660432303. The reversal of 65660432287 is 78223406656.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65660432287 is a prime.

It is a super-2 number, since 2×65660432287² (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 65660432287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65660432587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32830216143 + 32830216144.

It is an arithmetic number, because the mean of its divisors is an integer number (32830216144).

Almost surely, 2^65660432287 is an apocalyptic number.

65660432287 is a deficient number, since it is larger than the sum of its proper divisors (1).

65660432287 is an equidigital number, since it uses as much as digits as its factorization.

65660432287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 65660432287 in words is "sixty-five billion, six hundred sixty million, four hundred thirty-two thousand, two hundred eighty-seven".