65145224869 has 2 divisors, whose sum is σ = 65145224870. Its totient is φ = 65145224868.

The previous prime is 65145224831. The next prime is 65145224887. The reversal of 65145224869 is 96842254156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42211757025 + 22933467844 = 205455^2 + 151438^2 .

It is a cyclic number.

It is not a de Polignac number, because 65145224869 - 2¹⁹ = 65144700581 is a prime.

It is a super-2 number, since 2×65145224869² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65145224899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32572612434 + 32572612435.

It is an arithmetic number, because the mean of its divisors is an integer number (32572612435).

Almost surely, 2^65145224869 is an apocalyptic number.

It is an amenable number.

65145224869 is a deficient number, since it is larger than the sum of its proper divisors (1).

65145224869 is an equidigital number, since it uses as much as digits as its factorization.

65145224869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4147200, while the sum is 52.

The spelling of 65145224869 in words is "sixty-five billion, one hundred forty-five million, two hundred twenty-four thousand, eight hundred sixty-nine".