20063011621 has 4 divisors (see below), whose sum is σ = 20063414700. Its totient is φ = 20062608544.

The previous prime is 20063011547. The next prime is 20063011673. The reversal of 20063011621 is 12611036002.

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 6933060225 + 13129951396 = 83265^2 + 114586^2 .

It is a cyclic number.

It is not a de Polignac number, because 20063011621 - 2¹⁷ = 20062880549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20063011592 and 20063011601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20063011121) 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 3 ways as a sum of consecutive naturals, for example, 114286 + ... + 230623.

It is an arithmetic number, because the mean of its divisors is an integer number (5015853675).

Almost surely, 2^20063011621 is an apocalyptic number.

It is an amenable number.

20063011621 is a deficient number, since it is larger than the sum of its proper divisors (403079).

20063011621 is an equidigital number, since it uses as much as digits as its factorization.

20063011621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403078.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20063011621 its reverse (12611036002), we get a palindrome (32674047623).

The spelling of 20063011621 in words is "twenty billion, sixty-three million, eleven thousand, six hundred twenty-one".