68018027771 has 4 divisors (see below), whose sum is σ = 68019261600. Its totient is φ = 68016793944.

The previous prime is 68018027723. The next prime is 68018027789. The reversal of 68018027771 is 17772081086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17772081086 = 2 ⋅8886040543.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68018027771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68018027171) 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 in 3 ways as a sum of consecutive naturals, for example, 530156 + ... + 645833.

It is an arithmetic number, because the mean of its divisors is an integer number (17004815400).

Almost surely, 2^68018027771 is an apocalyptic number.

68018027771 is a deficient number, since it is larger than the sum of its proper divisors (1233829).

68018027771 is a wasteful number, since it uses less digits than its factorization.

68018027771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233828.

The product of its (nonzero) digits is 263424, while the sum is 47.

The spelling of 68018027771 in words is "sixty-eight billion, eighteen million, twenty-seven thousand, seven hundred seventy-one".