68857122171738 has 8 divisors (see below), whose sum is σ = 137714244343488. Its totient is φ = 22952374057244.

The previous prime is 68857122171737. The next prime is 68857122171829. The reversal of 68857122171738 is 83717122175886.

It is a sphenic number, since it is the product of 3 distinct primes.

68857122171738 is an admirable 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, 5738093514306 + ... + 5738093514317.

It is an arithmetic number, because the mean of its divisors is an integer number (17214280542936).

Almost surely, 2^{68857122171738} is an apocalyptic number.

68857122171738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68857122171738 is a wasteful number, since it uses less digits than its factorization.

68857122171738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11476187028628.

The product of its digits is 63221760, while the sum is 66.

The spelling of 68857122171738 in words is "sixty-eight trillion, eight hundred fifty-seven billion, one hundred twenty-two million, one hundred seventy-one thousand, seven hundred thirty-eight".