173985351365903 has 24 divisors (see below), whose sum is σ = 222933911391360. Its totient is φ = 134256758292720.

The previous prime is 173985351365869. The next prime is 173985351365921. The reversal of 173985351365903 is 309563153589371.

It is not a de Polignac number, because 173985351365903 - 2¹⁴ = 173985351349519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173985351365963) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1566900113 + ... + 1567011146.

It is an arithmetic number, because the mean of its divisors is an integer number (9288912974640).

Almost surely, 2^{173985351365903} is an apocalyptic number.

173985351365903 is a deficient number, since it is larger than the sum of its proper divisors (48948560025457).

173985351365903 is a wasteful number, since it uses less digits than its factorization.

173985351365903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3133911387 (or 3133911380 counting only the distinct ones).

The product of its (nonzero) digits is 275562000, while the sum is 68.

The spelling of 173985351365903 in words is "one hundred seventy-three trillion, nine hundred eighty-five billion, three hundred fifty-one million, three hundred sixty-five thousand, nine hundred three".