16551560507 has 2 divisors, whose sum is σ = 16551560508. Its totient is φ = 16551560506.

The previous prime is 16551560483. The next prime is 16551560527. The reversal of 16551560507 is 70506515561.

It is a strong prime.

It is an emirp because it is prime and its reverse (70506515561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16551560507 - 2¹⁸ = 16551298363 is a prime.

It is not a weakly prime, because it can be changed into another prime (16551560527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8275780253 + 8275780254.

It is an arithmetic number, because the mean of its divisors is an integer number (8275780254).

Almost surely, 2^16551560507 is an apocalyptic number.

16551560507 is a deficient number, since it is larger than the sum of its proper divisors (1).

16551560507 is an equidigital number, since it uses as much as digits as its factorization.

16551560507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157500, while the sum is 41.

The spelling of 16551560507 in words is "sixteen billion, five hundred fifty-one million, five hundred sixty thousand, five hundred seven".