16423156213 has 2 divisors, whose sum is σ = 16423156214. Its totient is φ = 16423156212.

The previous prime is 16423156181. The next prime is 16423156231. The reversal of 16423156213 is 31265132461.

Together with next prime (16423156231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15477101649 + 946054564 = 124407^2 + 30758^2 .

It is a cyclic number.

It is not a de Polignac number, because 16423156213 - 2⁵ = 16423156181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16423156313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8211578106 + 8211578107.

It is an arithmetic number, because the mean of its divisors is an integer number (8211578107).

Almost surely, 2^16423156213 is an apocalyptic number.

It is an amenable number.

16423156213 is a deficient number, since it is larger than the sum of its proper divisors (1).

16423156213 is an equidigital number, since it uses as much as digits as its factorization.

16423156213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

Adding to 16423156213 its reverse (31265132461), we get a palindrome (47688288674).

The spelling of 16423156213 in words is "sixteen billion, four hundred twenty-three million, one hundred fifty-six thousand, two hundred thirteen".