16521480306941 has 2 divisors, whose sum is σ = 16521480306942. Its totient is φ = 16521480306940.

The previous prime is 16521480306923. The next prime is 16521480306967. The reversal of 16521480306941 is 14960308412561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14551516476025 + 1969963830916 = 3814645^2 + 1403554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16521480306941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16521480306941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16521480303941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8260740153470 + 8260740153471.

It is an arithmetic number, because the mean of its divisors is an integer number (8260740153471).

Almost surely, 2^{16521480306941} is an apocalyptic number.

It is an amenable number.

16521480306941 is a deficient number, since it is larger than the sum of its proper divisors (1).

16521480306941 is an equidigital number, since it uses as much as digits as its factorization.

16521480306941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 16521480306941 in words is "sixteen trillion, five hundred twenty-one billion, four hundred eighty million, three hundred six thousand, nine hundred forty-one".