16220505541 has 2 divisors, whose sum is σ = 16220505542. Its totient is φ = 16220505540.

The previous prime is 16220505481. The next prime is 16220505551. The reversal of 16220505541 is 14550502261.

16220505541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11587661316 + 4632844225 = 107646^2 + 68065^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16220505541 is a prime.

It is a super-2 number, since 2×16220505541² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16220505551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8110252770 + 8110252771.

It is an arithmetic number, because the mean of its divisors is an integer number (8110252771).

Almost surely, 2^16220505541 is an apocalyptic number.

It is an amenable number.

16220505541 is a deficient number, since it is larger than the sum of its proper divisors (1).

16220505541 is an equidigital number, since it uses as much as digits as its factorization.

16220505541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 16220505541 in words is "sixteen billion, two hundred twenty million, five hundred five thousand, five hundred forty-one".