28116405776 has 20 divisors (see below), whose sum is σ = 54541753152. Its totient is φ = 14041114656.

The previous prime is 28116405773. The next prime is 28116405797. The reversal of 28116405776 is 67750461182.

It is a self number, because there is not a number n which added to its sum of digits gives 28116405776.

It is not an unprimeable number, because it can be changed into a prime (28116405773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054436 + ... + 1080771.

Almost surely, 2^28116405776 is an apocalyptic number.

It is an amenable number.

28116405776 is a deficient number, since it is larger than the sum of its proper divisors (26425347376).

28116405776 is a wasteful number, since it uses less digits than its factorization.

28116405776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136038 (or 2136032 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 28116405776 in words is "twenty-eight billion, one hundred sixteen million, four hundred five thousand, seven hundred seventy-six".