16268889447 has 10 divisors (see below), whose sum is σ = 24302909048. Its totient is φ = 10845926244.

The previous prime is 16268889389. The next prime is 16268889457. The reversal of 16268889447 is 74498886261.

16268889447 is a `hidden beast` number, since 16 + 26 + 88 + 89 + 447 = 666.

It is not a de Polignac number, because 16268889447 - 2¹¹ = 16268887399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16268889457) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 100425163 + ... + 100425324.

Almost surely, 2^16268889447 is an apocalyptic number.

16268889447 is a deficient number, since it is larger than the sum of its proper divisors (8034019601).

16268889447 is an equidigital number, since it uses as much as digits as its factorization.

16268889447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200850499 (or 200850490 counting only the distinct ones).

The product of its digits is 37158912, while the sum is 63.

The spelling of 16268889447 in words is "sixteen billion, two hundred sixty-eight million, eight hundred eighty-nine thousand, four hundred forty-seven".