16433321073541 has 2 divisors, whose sum is σ = 16433321073542. Its totient is φ = 16433321073540.

The previous prime is 16433321073539. The next prime is 16433321073601. The reversal of 16433321073541 is 14537012333461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14655658849441 + 1777662224100 = 3828271^2 + 1333290^2 .

It is a cyclic number.

It is not a de Polignac number, because 16433321073541 - 2¹ = 16433321073539 is a prime.

Together with 16433321073539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16433321076541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8216660536770 + 8216660536771.

It is an arithmetic number, because the mean of its divisors is an integer number (8216660536771).

Almost surely, 2^{16433321073541} is an apocalyptic number.

It is an amenable number.

16433321073541 is a deficient number, since it is larger than the sum of its proper divisors (1).

16433321073541 is an equidigital number, since it uses as much as digits as its factorization.

16433321073541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 43.

The spelling of 16433321073541 in words is "sixteen trillion, four hundred thirty-three billion, three hundred twenty-one million, seventy-three thousand, five hundred forty-one".