20503174541 has 4 divisors (see below), whose sum is σ = 20702234592. Its totient is φ = 20304114492.

The previous prime is 20503174459. The next prime is 20503174543. The reversal of 20503174541 is 14547130502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20503174541 - 2²⁶ = 20436065677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20503174498 and 20503174507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20503174543) 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, 99529871 + ... + 99530076.

It is an arithmetic number, because the mean of its divisors is an integer number (5175558648).

Almost surely, 2^20503174541 is an apocalyptic number.

It is an amenable number.

20503174541 is a deficient number, since it is larger than the sum of its proper divisors (199060051).

20503174541 is a wasteful number, since it uses less digits than its factorization.

20503174541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199060050.

The product of its (nonzero) digits is 16800, while the sum is 32.

The spelling of 20503174541 in words is "twenty billion, five hundred three million, one hundred seventy-four thousand, five hundred forty-one".