16556211263 has 2 divisors, whose sum is σ = 16556211264. Its totient is φ = 16556211262.

The previous prime is 16556211223. The next prime is 16556211281. The reversal of 16556211263 is 36211265561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16556211263 - 2¹² = 16556207167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16556211223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8278105631 + 8278105632.

It is an arithmetic number, because the mean of its divisors is an integer number (8278105632).

Almost surely, 2^16556211263 is an apocalyptic number.

16556211263 is a deficient number, since it is larger than the sum of its proper divisors (1).

16556211263 is an equidigital number, since it uses as much as digits as its factorization.

16556211263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 38.

The spelling of 16556211263 in words is "sixteen billion, five hundred fifty-six million, two hundred eleven thousand, two hundred sixty-three".