16240543018541 has 2 divisors, whose sum is σ = 16240543018542. Its totient is φ = 16240543018540.

The previous prime is 16240543018537. The next prime is 16240543018577. The reversal of 16240543018541 is 14581034504261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12390019842916 + 3850523175625 = 3519946^2 + 1962275^2 .

It is a cyclic number.

It is not a de Polignac number, because 16240543018541 - 2² = 16240543018537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16240543018492 and 16240543018501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16240543218541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8120271509270 + 8120271509271.

It is an arithmetic number, because the mean of its divisors is an integer number (8120271509271).

Almost surely, 2^{16240543018541} is an apocalyptic number.

It is an amenable number.

16240543018541 is a deficient number, since it is larger than the sum of its proper divisors (1).

16240543018541 is an equidigital number, since it uses as much as digits as its factorization.

16240543018541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 460800, while the sum is 44.

The spelling of 16240543018541 in words is "sixteen trillion, two hundred forty billion, five hundred forty-three million, eighteen thousand, five hundred forty-one".