68166394926 has 32 divisors (see below), whose sum is σ = 160019957760. Its totient is φ = 18949730976.

The previous prime is 68166394921. The next prime is 68166394937. The reversal of 68166394926 is 62949366186.

It is a self number, because there is not a number n which added to its sum of digits gives 68166394926.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68166394921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21931006 + ... + 21934113.

It is an arithmetic number, because the mean of its divisors is an integer number (5000623680).

Almost surely, 2^68166394926 is an apocalyptic number.

68166394926 is an abundant number, since it is smaller than the sum of its proper divisors (91853562834).

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

68166394926 is a wasteful number, since it uses less digits than its factorization.

68166394926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43865168.

The product of its digits is 20155392, while the sum is 60.

The spelling of 68166394926 in words is "sixty-eight billion, one hundred sixty-six million, three hundred ninety-four thousand, nine hundred twenty-six".