68857122171736 has 16 divisors (see below), whose sum is σ = 129107671584840. Its totient is φ = 34428409749120.

The previous prime is 68857122171731. The next prime is 68857122171737. The reversal of 68857122171736 is 63717122175886.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68857122171731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16971606 + ... + 20633701.

Almost surely, 2^{68857122171736} is an apocalyptic number.

It is an amenable number.

68857122171736 is a deficient number, since it is larger than the sum of its proper divisors (60250549413104).

68857122171736 is a wasteful number, since it uses less digits than its factorization.

68857122171736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37834194 (or 37834190 counting only the distinct ones).

The product of its digits is 47416320, while the sum is 64.

The spelling of 68857122171736 in words is "sixty-eight trillion, eight hundred fifty-seven billion, one hundred twenty-two million, one hundred seventy-one thousand, seven hundred thirty-six".