194427067987656 has 768 divisors, whose sum is σ = 653683659632640. Its totient is φ = 50999847782400.

The previous prime is 194427067987609. The next prime is 194427067987729. The reversal of 194427067987656 is 656789760724491.

194427067987656 is a `hidden beast` number, since 1 + 9 + 4 + 427 + 0 + 6 + 79 + 8 + 76 + 56 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 26094086731 + ... + 26094094181.

It is an arithmetic number, because the mean of its divisors is an integer number (851150598480).

Almost surely, 2^{194427067987656} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194427067987656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326841829816320).

194427067987656 is an abundant number, since it is smaller than the sum of its proper divisors (459256591644984).

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

194427067987656 is a wasteful number, since it uses less digits than its factorization.

194427067987656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8346 (or 8339 counting only the distinct ones).

The product of its (nonzero) digits is 7681443840, while the sum is 81.

The spelling of 194427067987656 in words is "one hundred ninety-four trillion, four hundred twenty-seven billion, sixty-seven million, nine hundred eighty-seven thousand, six hundred fifty-six".