16105524217 has 2 divisors, whose sum is σ = 16105524218. Its totient is φ = 16105524216.

The previous prime is 16105524143. The next prime is 16105524247. The reversal of 16105524217 is 71242550161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14097050361 + 2008473856 = 118731^2 + 44816^2 .

It is an emirp because it is prime and its reverse (71242550161) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16105524217 is a prime.

It is not a weakly prime, because it can be changed into another prime (16105524247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8052762108 + 8052762109.

It is an arithmetic number, because the mean of its divisors is an integer number (8052762109).

Almost surely, 2^16105524217 is an apocalyptic number.

It is an amenable number.

16105524217 is a deficient number, since it is larger than the sum of its proper divisors (1).

16105524217 is an equidigital number, since it uses as much as digits as its factorization.

16105524217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 34.

The spelling of 16105524217 in words is "sixteen billion, one hundred five million, five hundred twenty-four thousand, two hundred seventeen".