68586487591 has 2 divisors, whose sum is σ = 68586487592. Its totient is φ = 68586487590.

The previous prime is 68586487513. The next prime is 68586487597. The reversal of 68586487591 is 19578468586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68586487591 - 2¹¹ = 68586485543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68586487597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34293243795 + 34293243796.

It is an arithmetic number, because the mean of its divisors is an integer number (34293243796).

Almost surely, 2^68586487591 is an apocalyptic number.

68586487591 is a deficient number, since it is larger than the sum of its proper divisors (1).

68586487591 is an equidigital number, since it uses as much as digits as its factorization.

68586487591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116121600, while the sum is 67.

The spelling of 68586487591 in words is "sixty-eight billion, five hundred eighty-six million, four hundred eighty-seven thousand, five hundred ninety-one".