65420737247 has 2 divisors, whose sum is σ = 65420737248. Its totient is φ = 65420737246.

The previous prime is 65420737219. The next prime is 65420737279. The reversal of 65420737247 is 74273702456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65420737247 - 2¹⁴ = 65420720863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65420739247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32710368623 + 32710368624.

It is an arithmetic number, because the mean of its divisors is an integer number (32710368624).

Almost surely, 2^65420737247 is an apocalyptic number.

65420737247 is a deficient number, since it is larger than the sum of its proper divisors (1).

65420737247 is an equidigital number, since it uses as much as digits as its factorization.

65420737247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1975680, while the sum is 47.

The spelling of 65420737247 in words is "sixty-five billion, four hundred twenty million, seven hundred thirty-seven thousand, two hundred forty-seven".