20043321541 has 16 divisors (see below), whose sum is σ = 21165928560. Its totient is φ = 18954846720.

The previous prime is 20043321527. The next prime is 20043321619. The reversal of 20043321541 is 14512334002.

It can be written as a sum of positive squares in 8 ways, for example, as 124233316 + 19919088225 = 11146^2 + 141135^2 .

It is a cyclic number.

It is not a de Polignac number, because 20043321541 - 2⁷ = 20043321413 is a prime.

It is a super-2 number, since 2×20043321541² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043321041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383515 + ... + 432631.

It is an arithmetic number, because the mean of its divisors is an integer number (1322870535).

Almost surely, 2^20043321541 is an apocalyptic number.

It is an amenable number.

20043321541 is a deficient number, since it is larger than the sum of its proper divisors (1122607019).

20043321541 is a wasteful number, since it uses less digits than its factorization.

20043321541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49464.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 20043321541 its reverse (14512334002), we get a palindrome (34555655543).

The spelling of 20043321541 in words is "twenty billion, forty-three million, three hundred twenty-one thousand, five hundred forty-one".