65016606506639 has 2 divisors, whose sum is σ = 65016606506640. Its totient is φ = 65016606506638.

The previous prime is 65016606506567. The next prime is 65016606506669. The reversal of 65016606506639 is 93660560661056.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65016606506639 - 2¹⁶ = 65016606441103 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65016606506669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32508303253319 + 32508303253320.

It is an arithmetic number, because the mean of its divisors is an integer number (32508303253320).

Almost surely, 2^{65016606506639} is an apocalyptic number.

65016606506639 is a deficient number, since it is larger than the sum of its proper divisors (1).

65016606506639 is an equidigital number, since it uses as much as digits as its factorization.

65016606506639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31492800, while the sum is 59.

The spelling of 65016606506639 in words is "sixty-five trillion, sixteen billion, six hundred six million, five hundred six thousand, six hundred thirty-nine".