20356141381633 has 4 divisors (see below), whose sum is σ = 20356193101140. Its totient is φ = 20356089662128.

The previous prime is 20356141381627. The next prime is 20356141381637. The reversal of 20356141381633 is 33618314165302.

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 16939052341264 + 3417089040369 = 4115708^2 + 1848537^2 .

It is a cyclic number.

It is not a de Polignac number, because 20356141381633 - 2²⁵ = 20356107827201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20356141381637) 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, 25264810 + ... + 26058067.

It is an arithmetic number, because the mean of its divisors is an integer number (5089048275285).

Almost surely, 2^{20356141381633} is an apocalyptic number.

It is an amenable number.

20356141381633 is a deficient number, since it is larger than the sum of its proper divisors (51719507).

20356141381633 is an equidigital number, since it uses as much as digits as its factorization.

20356141381633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51719506.

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 20356141381633 in words is "twenty trillion, three hundred fifty-six billion, one hundred forty-one million, three hundred eighty-one thousand, six hundred thirty-three".