61085328559 has 2 divisors, whose sum is σ = 61085328560. Its totient is φ = 61085328558.

The previous prime is 61085328517. The next prime is 61085328649. The reversal of 61085328559 is 95582358016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61085328559 - 2¹⁹ = 61084804271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61085328859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30542664279 + 30542664280.

It is an arithmetic number, because the mean of its divisors is an integer number (30542664280).

Almost surely, 2^61085328559 is an apocalyptic number.

61085328559 is a deficient number, since it is larger than the sum of its proper divisors (1).

61085328559 is an equidigital number, since it uses as much as digits as its factorization.

61085328559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592000, while the sum is 52.

The spelling of 61085328559 in words is "sixty-one billion, eighty-five million, three hundred twenty-eight thousand, five hundred fifty-nine".