65651024138989 has 2 divisors, whose sum is σ = 65651024138990. Its totient is φ = 65651024138988.

The previous prime is 65651024138977. The next prime is 65651024139059. The reversal of 65651024138989 is 98983142015656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59144866924900 + 6506157214089 = 7690570^2 + 2550717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65651024138989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65651024138939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32825512069494 + 32825512069495.

It is an arithmetic number, because the mean of its divisors is an integer number (32825512069495).

Almost surely, 2^{65651024138989} is an apocalyptic number.

It is an amenable number.

65651024138989 is a deficient number, since it is larger than the sum of its proper divisors (1).

65651024138989 is an equidigital number, since it uses as much as digits as its factorization.

65651024138989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 111974400, while the sum is 67.

The spelling of 65651024138989 in words is "sixty-five trillion, six hundred fifty-one billion, twenty-four million, one hundred thirty-eight thousand, nine hundred eighty-nine".