20355101620033 has 4 divisors (see below), whose sum is σ = 20355197848020. Its totient is φ = 20355005392048.

The previous prime is 20355101619971. The next prime is 20355101620057. The reversal of 20355101620033 is 33002610155302.

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 10973206131889 + 9381895488144 = 3312583^2 + 3062988^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20355101620033 is a prime.

It is a super-2 number, since 2×20355101620033² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20355101619977 and 20355101620004.

It is not an unprimeable number, because it can be changed into a prime (20355101620933) 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, 47795998 + ... + 48219991.

It is an arithmetic number, because the mean of its divisors is an integer number (5088799462005).

Almost surely, 2^{20355101620033} is an apocalyptic number.

It is an amenable number.

20355101620033 is a deficient number, since it is larger than the sum of its proper divisors (96227987).

20355101620033 is an equidigital number, since it uses as much as digits as its factorization.

20355101620033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96227986.

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 20355101620033 its reverse (33002610155302), we get a palindrome (53357711775335).

The spelling of 20355101620033 in words is "twenty trillion, three hundred fifty-five billion, one hundred one million, six hundred twenty thousand, thirty-three".