20563335541 has 48 divisors (see below), whose sum is σ = 26552945664. Its totient is φ = 15793214976.

The previous prime is 20563335517. The next prime is 20563335553. The reversal of 20563335541 is 14553336502.

It is not a de Polignac number, because 20563335541 - 2⁵ = 20563335509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20563335541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20563335041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4270051 + ... + 4274863.

It is an arithmetic number, because the mean of its divisors is an integer number (553186368).

Almost surely, 2^20563335541 is an apocalyptic number.

It is an amenable number.

20563335541 is a deficient number, since it is larger than the sum of its proper divisors (5989610123).

20563335541 is a wasteful number, since it uses less digits than its factorization.

20563335541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5090 (or 5083 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 37.

The spelling of 20563335541 in words is "twenty billion, five hundred sixty-three million, three hundred thirty-five thousand, five hundred forty-one".