68397574166 has 4 divisors (see below), whose sum is σ = 102596361252. Its totient is φ = 34198787082.

The previous prime is 68397574123. The next prime is 68397574169. The reversal of 68397574166 is 66147579386.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 68397574099 and 68397574108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68397574169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17099393540 + ... + 17099393543.

It is an arithmetic number, because the mean of its divisors is an integer number (25649090313).

Almost surely, 2^68397574166 is an apocalyptic number.

68397574166 is a deficient number, since it is larger than the sum of its proper divisors (34198787086).

68397574166 is a wasteful number, since it uses less digits than its factorization.

68397574166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34198787085.

The product of its digits is 45722880, while the sum is 62.

The spelling of 68397574166 in words is "sixty-eight billion, three hundred ninety-seven million, five hundred seventy-four thousand, one hundred sixty-six".