18573351321601 has 8 divisors (see below), whose sum is σ = 18576148000608. Its totient is φ = 18570554880000.

The previous prime is 18573351321589. The next prime is 18573351321611. The reversal of 18573351321601 is 10612315337581.

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 18573351321601 - 2²⁷ = 18573217103873 is a prime.

It is a super-2 number, since 2×18573351321601² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18573351321611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206575866 + ... + 206665756.

It is an arithmetic number, because the mean of its divisors is an integer number (2322018500076).

Almost surely, 2^{18573351321601} is an apocalyptic number.

It is an amenable number.

18573351321601 is a deficient number, since it is larger than the sum of its proper divisors (2796679007).

18573351321601 is a wasteful number, since it uses less digits than its factorization.

18573351321601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118703.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 18573351321601 in words is "eighteen trillion, five hundred seventy-three billion, three hundred fifty-one million, three hundred twenty-one thousand, six hundred one".