16456520111 has 2 divisors, whose sum is σ = 16456520112. Its totient is φ = 16456520110.

The previous prime is 16456520063. The next prime is 16456520147. The reversal of 16456520111 is 11102565461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16456520111 - 2¹⁸ = 16456257967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16456528111) 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, 8228260055 + 8228260056.

It is an arithmetic number, because the mean of its divisors is an integer number (8228260056).

Almost surely, 2^16456520111 is an apocalyptic number.

16456520111 is a deficient number, since it is larger than the sum of its proper divisors (1).

16456520111 is an equidigital number, since it uses as much as digits as its factorization.

16456520111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 16456520111 in words is "sixteen billion, four hundred fifty-six million, five hundred twenty thousand, one hundred eleven".