16257944256 has 28 divisors (see below), whose sum is σ = 43015811352. Its totient is φ = 5419314688.

The previous prime is 16257944239. The next prime is 16257944279. The reversal of 16257944256 is 65244975261.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 16257944199 and 16257944208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42338205 + ... + 42338588.

Almost surely, 2^16257944256 is an apocalyptic number.

16257944256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16257944256 is an abundant number, since it is smaller than the sum of its proper divisors (26757867096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16257944256 is an equidigital number, since it uses as much as digits as its factorization.

16257944256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84676808 (or 84676798 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 51.

The spelling of 16257944256 in words is "sixteen billion, two hundred fifty-seven million, nine hundred forty-four thousand, two hundred fifty-six".