67851805986342 has 64 divisors (see below), whose sum is σ = 175242759667200. Its totient is φ = 19057650101280.

The previous prime is 67851805986331. The next prime is 67851805986359. The reversal of 67851805986342 is 24368950815876.

67851805986342 is a `hidden beast` number, since 6 + 7 + 8 + 518 + 0 + 5 + 9 + 8 + 63 + 42 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1521182209 + ... + 1521226812.

It is an arithmetic number, because the mean of its divisors is an integer number (2738168119800).

It is a 2-persistent number, because it is pandigital, and so is 2⋅67851805986342 = 135703611972684, but 3⋅67851805986342 = 203555417959026 is not.

Almost surely, 2^{67851805986342} is an apocalyptic number.

67851805986342 is an abundant number, since it is smaller than the sum of its proper divisors (107390953680858).

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

67851805986342 is a wasteful number, since it uses less digits than its factorization.

67851805986342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3042409098 (or 3042409092 counting only the distinct ones).

The product of its (nonzero) digits is 696729600, while the sum is 72.

The spelling of 67851805986342 in words is "sixty-seven trillion, eight hundred fifty-one billion, eight hundred five million, nine hundred eighty-six thousand, three hundred forty-two".