16206779843 has 2 divisors, whose sum is σ = 16206779844. Its totient is φ = 16206779842.

The previous prime is 16206779803. The next prime is 16206779857. The reversal of 16206779843 is 34897760261.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16206779843 is a prime.

It is a super-2 number, since 2×16206779843² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (16206779803) 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, 8103389921 + 8103389922.

It is an arithmetic number, because the mean of its divisors is an integer number (8103389922).

Almost surely, 2^16206779843 is an apocalyptic number.

16206779843 is a deficient number, since it is larger than the sum of its proper divisors (1).

16206779843 is an equidigital number, since it uses as much as digits as its factorization.

16206779843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 16206779843 in words is "sixteen billion, two hundred six million, seven hundred seventy-nine thousand, eight hundred forty-three".