20004022541 has 2 divisors, whose sum is σ = 20004022542. Its totient is φ = 20004022540.

The previous prime is 20004022523. The next prime is 20004022573. The reversal of 20004022541 is 14522040002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11368037641 + 8635984900 = 106621^2 + 92930^2 .

It is a cyclic number.

It is not a de Polignac number, because 20004022541 - 2¹⁴ = 20004006157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20004022141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002011270 + 10002011271.

It is an arithmetic number, because the mean of its divisors is an integer number (10002011271).

Almost surely, 2^20004022541 is an apocalyptic number.

It is an amenable number.

20004022541 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004022541 is an equidigital number, since it uses as much as digits as its factorization.

20004022541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 20004022541 its reverse (14522040002), we get a palindrome (34526062543).

The spelling of 20004022541 in words is "twenty billion, four million, twenty-two thousand, five hundred forty-one".