381217729085 has 8 divisors (see below), whose sum is σ = 458503330560. Its totient is φ = 304279479504.

The previous prime is 381217729043. The next prime is 381217729121. The reversal of 381217729085 is 580927712183.

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

It is a cyclic number.

It is not a de Polignac number, because 381217729085 - 2¹⁰ = 381217728061 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 86835557 + ... + 86839946.

It is an arithmetic number, because the mean of its divisors is an integer number (57312916320).

Almost surely, 2^381217729085 is an apocalyptic number.

It is an amenable number.

381217729085 is a deficient number, since it is larger than the sum of its proper divisors (77285601475).

381217729085 is a wasteful number, since it uses less digits than its factorization.

381217729085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173675947.

The product of its (nonzero) digits is 1693440, while the sum is 53.

The spelling of 381217729085 in words is "three hundred eighty-one billion, two hundred seventeen million, seven hundred twenty-nine thousand, eighty-five".