65226218513 has 2 divisors, whose sum is σ = 65226218514. Its totient is φ = 65226218512.

The previous prime is 65226218509. The next prime is 65226218593. The reversal of 65226218513 is 31581262256.

65226218513 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., 45921061264 + 19305157249 = 214292^2 + 138943^2 .

It is a cyclic number.

It is not a de Polignac number, because 65226218513 - 2² = 65226218509 is a prime.

It is not a weakly prime, because it can be changed into another prime (65226218503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32613109256 + 32613109257.

It is an arithmetic number, because the mean of its divisors is an integer number (32613109257).

Almost surely, 2^65226218513 is an apocalyptic number.

It is an amenable number.

65226218513 is a deficient number, since it is larger than the sum of its proper divisors (1).

65226218513 is an equidigital number, since it uses as much as digits as its factorization.

65226218513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 41.

The spelling of 65226218513 in words is "sixty-five billion, two hundred twenty-six million, two hundred eighteen thousand, five hundred thirteen".