123543603541 has 2 divisors, whose sum is σ = 123543603542. Its totient is φ = 123543603540.

The previous prime is 123543603497. The next prime is 123543603551. The reversal of 123543603541 is 145306345321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117528980625 + 6014622916 = 342825^2 + 77554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123543603541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123543603541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123543603551) 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 as a sum of consecutive naturals, namely, 61771801770 + 61771801771.

It is an arithmetic number, because the mean of its divisors is an integer number (61771801771).

Almost surely, 2^123543603541 is an apocalyptic number.

It is an amenable number.

123543603541 is a deficient number, since it is larger than the sum of its proper divisors (1).

123543603541 is an equidigital number, since it uses as much as digits as its factorization.

123543603541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 123543603541 its reverse (145306345321), we get a palindrome (268849948862).

The spelling of 123543603541 in words is "one hundred twenty-three billion, five hundred forty-three million, six hundred three thousand, five hundred forty-one".