16256223149 has 2 divisors, whose sum is σ = 16256223150. Its totient is φ = 16256223148.

The previous prime is 16256223043. The next prime is 16256223163. The reversal of 16256223149 is 94132265261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11127085225 + 5129137924 = 105485^2 + 71618^2 .

It is a cyclic number.

It is not a de Polignac number, because 16256223149 - 2²⁴ = 16239445933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16256223349) 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, 8128111574 + 8128111575.

It is an arithmetic number, because the mean of its divisors is an integer number (8128111575).

Almost surely, 2^16256223149 is an apocalyptic number.

It is an amenable number.

16256223149 is a deficient number, since it is larger than the sum of its proper divisors (1).

16256223149 is an equidigital number, since it uses as much as digits as its factorization.

16256223149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 41.

The spelling of 16256223149 in words is "sixteen billion, two hundred fifty-six million, two hundred twenty-three thousand, one hundred forty-nine".