20173533668902 has 8 divisors (see below), whose sum is σ = 30831249569616. Its totient is φ = 9896450479032.

The previous prime is 20173533668839. The next prime is 20173533668929. The reversal of 20173533668902 is 20986633537102.

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

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 3 ways as a sum of consecutive naturals, for example, 95158177578 + ... + 95158177789.

It is an arithmetic number, because the mean of its divisors is an integer number (3853906196202).

Almost surely, 2^{20173533668902} is an apocalyptic number.

20173533668902 is a deficient number, since it is larger than the sum of its proper divisors (10657715900714).

20173533668902 is a wasteful number, since it uses less digits than its factorization.

20173533668902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190316355422.

The product of its (nonzero) digits is 9797760, while the sum is 55.

The spelling of 20173533668902 in words is "twenty trillion, one hundred seventy-three billion, five hundred thirty-three million, six hundred sixty-eight thousand, nine hundred two".