68870187811 has 2 divisors, whose sum is σ = 68870187812. Its totient is φ = 68870187810.

The previous prime is 68870187797. The next prime is 68870187907. The reversal of 68870187811 is 11878107886.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68870187811 - 2⁵ = 68870187779 is a prime.

It is not a weakly prime, because it can be changed into another prime (68870187311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34435093905 + 34435093906.

It is an arithmetic number, because the mean of its divisors is an integer number (34435093906).

Almost surely, 2^68870187811 is an apocalyptic number.

68870187811 is a deficient number, since it is larger than the sum of its proper divisors (1).

68870187811 is an equidigital number, since it uses as much as digits as its factorization.

68870187811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1204224, while the sum is 55.

The spelling of 68870187811 in words is "sixty-eight billion, eight hundred seventy million, one hundred eighty-seven thousand, eight hundred eleven".