68351986173 has 16 divisors (see below), whose sum is σ = 96719809536. Its totient is φ = 42788459520.

The previous prime is 68351986169. The next prime is 68351986177. The reversal of 68351986173 is 37168915386.

It is an interprime number because it is at equal distance from previous prime (68351986169) and next prime (68351986177).

It is not a de Polignac number, because 68351986173 - 2² = 68351986169 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68351986177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1525533 + ... + 1569698.

It is an arithmetic number, because the mean of its divisors is an integer number (6044988096).

Almost surely, 2^68351986173 is an apocalyptic number.

It is an amenable number.

68351986173 is a deficient number, since it is larger than the sum of its proper divisors (28367823363).

68351986173 is a wasteful number, since it uses less digits than its factorization.

68351986173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095684.

The product of its digits is 6531840, while the sum is 57.

The spelling of 68351986173 in words is "sixty-eight billion, three hundred fifty-one million, nine hundred eighty-six thousand, one hundred seventy-three".