20001853500353 has 4 divisors (see below), whose sum is σ = 20008002244308. Its totient is φ = 19995704756400.

The previous prime is 20001853500341. The next prime is 20001853500361. The reversal of 20001853500353 is 35300535810002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14922676288144 + 5079177212209 = 3862988^2 + 2253703^2 .

It is a cyclic number.

It is not a de Polignac number, because 20001853500353 - 2¹² = 20001853496257 is a prime.

It is a super-2 number, since 2×20001853500353² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20001853500323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3074367098 + ... + 3074373603.

It is an arithmetic number, because the mean of its divisors is an integer number (5002000561077).

Almost surely, 2^{20001853500353} is an apocalyptic number.

It is an amenable number.

20001853500353 is a deficient number, since it is larger than the sum of its proper divisors (6148743955).

20001853500353 is an equidigital number, since it uses as much as digits as its factorization.

20001853500353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6148743954.

The product of its (nonzero) digits is 54000, while the sum is 35.

The spelling of 20001853500353 in words is "twenty trillion, one billion, eight hundred fifty-three million, five hundred thousand, three hundred fifty-three".