20818573001 has 8 divisors (see below), whose sum is σ = 21493344000. Its totient is φ = 20144002320.

The previous prime is 20818572991. The next prime is 20818573117. The reversal of 20818573001 is 10037581802.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20818573001 is a prime.

It is a super-2 number, since 2×20818573001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20818573301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177650 + ... + 270548.

It is an arithmetic number, because the mean of its divisors is an integer number (2686668000).

Almost surely, 2^20818573001 is an apocalyptic number.

It is an amenable number.

20818573001 is a deficient number, since it is larger than the sum of its proper divisors (674770999).

20818573001 is an equidigital number, since it uses as much as digits as its factorization.

20818573001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100159.

The product of its (nonzero) digits is 13440, while the sum is 35.

The spelling of 20818573001 in words is "twenty billion, eight hundred eighteen million, five hundred seventy-three thousand, one".