68428844587 has 2 divisors, whose sum is σ = 68428844588. Its totient is φ = 68428844586.

The previous prime is 68428844581. The next prime is 68428844591. The reversal of 68428844587 is 78544882486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68428844587 - 2³ = 68428844579 is a prime.

It is not a weakly prime, because it can be changed into another prime (68428844581) 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, 34214422293 + 34214422294.

It is an arithmetic number, because the mean of its divisors is an integer number (34214422294).

Almost surely, 2^68428844587 is an apocalyptic number.

68428844587 is a deficient number, since it is larger than the sum of its proper divisors (1).

68428844587 is an equidigital number, since it uses as much as digits as its factorization.

68428844587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110100480, while the sum is 64.

The spelling of 68428844587 in words is "sixty-eight billion, four hundred twenty-eight million, eight hundred forty-four thousand, five hundred eighty-seven".