65237428409 has 2 divisors, whose sum is σ = 65237428410. Its totient is φ = 65237428408.

The previous prime is 65237428393. The next prime is 65237428441. The reversal of 65237428409 is 90482473256.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49371506809 + 15865921600 = 222197^2 + 125960^2 .

It is a cyclic number.

It is not a de Polignac number, because 65237428409 - 2⁴ = 65237428393 is a prime.

It is not a weakly prime, because it can be changed into another prime (65237428909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32618714204 + 32618714205.

It is an arithmetic number, because the mean of its divisors is an integer number (32618714205).

Almost surely, 2^65237428409 is an apocalyptic number.

It is an amenable number.

65237428409 is a deficient number, since it is larger than the sum of its proper divisors (1).

65237428409 is an equidigital number, since it uses as much as digits as its factorization.

65237428409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 65237428409 in words is "sixty-five billion, two hundred thirty-seven million, four hundred twenty-eight thousand, four hundred nine".