65056178189 has 2 divisors, whose sum is σ = 65056178190. Its totient is φ = 65056178188.

The previous prime is 65056178113. The next prime is 65056178203. The reversal of 65056178189 is 98187165056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62679128164 + 2377050025 = 250358^2 + 48755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65056178189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65056178489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32528089094 + 32528089095.

It is an arithmetic number, because the mean of its divisors is an integer number (32528089095).

Almost surely, 2^65056178189 is an apocalyptic number.

It is an amenable number.

65056178189 is a deficient number, since it is larger than the sum of its proper divisors (1).

65056178189 is an equidigital number, since it uses as much as digits as its factorization.

65056178189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3628800, while the sum is 56.

The spelling of 65056178189 in words is "sixty-five billion, fifty-six million, one hundred seventy-eight thousand, one hundred eighty-nine".