16355442643 has 2 divisors, whose sum is σ = 16355442644. Its totient is φ = 16355442642.

The previous prime is 16355442599. The next prime is 16355442647. The reversal of 16355442643 is 34624455361.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16355442643 - 2²⁹ = 15818571731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16355442643.

It is not a weakly prime, because it can be changed into another prime (16355442647) 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, 8177721321 + 8177721322.

It is an arithmetic number, because the mean of its divisors is an integer number (8177721322).

Almost surely, 2^16355442643 is an apocalyptic number.

16355442643 is a deficient number, since it is larger than the sum of its proper divisors (1).

16355442643 is an equidigital number, since it uses as much as digits as its factorization.

16355442643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1036800, while the sum is 43.

The spelling of 16355442643 in words is "sixteen billion, three hundred fifty-five million, four hundred forty-two thousand, six hundred forty-three".