20605003141 has 4 divisors (see below), whose sum is σ = 20887263532. Its totient is φ = 20322742752.

The previous prime is 20605003127. The next prime is 20605003147. The reversal of 20605003141 is 14130050602.

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 4048776900 + 16556226241 = 63630^2 + 128671^2 .

It is a cyclic number.

It is not a de Polignac number, because 20605003141 - 2⁵ = 20605003109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20605003147) 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, 141130086 + ... + 141130231.

It is an arithmetic number, because the mean of its divisors is an integer number (5221815883).

Almost surely, 2^20605003141 is an apocalyptic number.

It is an amenable number.

20605003141 is a deficient number, since it is larger than the sum of its proper divisors (282260391).

20605003141 is an equidigital number, since it uses as much as digits as its factorization.

20605003141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282260390.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 20605003141 its reverse (14130050602), we get a palindrome (34735053743).

The spelling of 20605003141 in words is "twenty billion, six hundred five million, three thousand, one hundred forty-one".