65663464357 has 2 divisors, whose sum is σ = 65663464358. Its totient is φ = 65663464356.

The previous prime is 65663464343. The next prime is 65663464387. The reversal of 65663464357 is 75346436656.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61904425636 + 3759038721 = 248806^2 + 61311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65663464357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65663464298 and 65663464307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65663464387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32831732178 + 32831732179.

It is an arithmetic number, because the mean of its divisors is an integer number (32831732179).

Almost surely, 2^65663464357 is an apocalyptic number.

It is an amenable number.

65663464357 is a deficient number, since it is larger than the sum of its proper divisors (1).

65663464357 is an equidigital number, since it uses as much as digits as its factorization.

65663464357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32659200, while the sum is 55.

The spelling of 65663464357 in words is "sixty-five billion, six hundred sixty-three million, four hundred sixty-four thousand, three hundred fifty-seven".