16423333049 has 4 divisors (see below), whose sum is σ = 16423589364. Its totient is φ = 16423076736.

The previous prime is 16423333039. The next prime is 16423333051. The reversal of 16423333049 is 94033332461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 94033332461 = 43711 ⋅2151251.

It can be written as a sum of positive squares in 2 ways, for example, as 3541083049 + 12882250000 = 59507^2 + 113500^2 .

It is a cyclic number.

It is not a de Polignac number, because 16423333049 - 2¹² = 16423328953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16423333039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62669 + ... + 191765.

It is an arithmetic number, because the mean of its divisors is an integer number (4105897341).

Almost surely, 2^16423333049 is an apocalyptic number.

It is an amenable number.

16423333049 is a deficient number, since it is larger than the sum of its proper divisors (256315).

16423333049 is a wasteful number, since it uses less digits than its factorization.

16423333049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256314.

The product of its (nonzero) digits is 139968, while the sum is 38.

The spelling of 16423333049 in words is "sixteen billion, four hundred twenty-three million, three hundred thirty-three thousand, forty-nine".