16396257049 has 4 divisors (see below), whose sum is σ = 16407024336. Its totient is φ = 16385489764.

The previous prime is 16396257037. The next prime is 16396257067. The reversal of 16396257049 is 94075269361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94075269361 = 139 ⋅676800499.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16396257049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16396256987 and 16396257005.

It is not an unprimeable number, because it can be changed into a prime (16396257949) 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, 5381359 + ... + 5384404.

It is an arithmetic number, because the mean of its divisors is an integer number (4101756084).

Almost surely, 2^16396257049 is an apocalyptic number.

It is an amenable number.

16396257049 is a deficient number, since it is larger than the sum of its proper divisors (10767287).

16396257049 is a wasteful number, since it uses less digits than its factorization.

16396257049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10767286.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The spelling of 16396257049 in words is "sixteen billion, three hundred ninety-six million, two hundred fifty-seven thousand, forty-nine".