68956000871 has 2 divisors, whose sum is σ = 68956000872. Its totient is φ = 68956000870.

The previous prime is 68956000859. The next prime is 68956000877. The reversal of 68956000871 is 17800065986.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68956000871 - 2³⁰ = 67882259047 is a prime.

It is a super-2 number, since 2×68956000871² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68956000877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34478000435 + 34478000436.

It is an arithmetic number, because the mean of its divisors is an integer number (34478000436).

Almost surely, 2^68956000871 is an apocalyptic number.

68956000871 is a deficient number, since it is larger than the sum of its proper divisors (1).

68956000871 is an equidigital number, since it uses as much as digits as its factorization.

68956000871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 68956000871 in words is "sixty-eight billion, nine hundred fifty-six million, eight hundred seventy-one", and thus it is an aban number.