541131603565001 has 2 divisors, whose sum is σ = 541131603565002. Its totient is φ = 541131603565000.

The previous prime is 541131603564967. The next prime is 541131603565009. The reversal of 541131603565001 is 100565306131145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318276268409401 + 222855335155600 = 17840299^2 + 14928340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-541131603565001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 541131603565001.

It is not a weakly prime, because it can be changed into another prime (541131603565009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270565801782500 + 270565801782501.

It is an arithmetic number, because the mean of its divisors is an integer number (270565801782501).

Almost surely, 2^{541131603565001} is an apocalyptic number.

It is an amenable number.

541131603565001 is a deficient number, since it is larger than the sum of its proper divisors (1).

541131603565001 is an equidigital number, since it uses as much as digits as its factorization.

541131603565001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 41.

Adding to 541131603565001 its reverse (100565306131145), we get a palindrome (641696909696146).

The spelling of 541131603565001 in words is "five hundred forty-one trillion, one hundred thirty-one billion, six hundred three million, five hundred sixty-five thousand, one".