28116773766 has 24 divisors (see below), whose sum is σ = 60928474464. Its totient is φ = 9370904400.

The previous prime is 28116773753. The next prime is 28116773771. The reversal of 28116773766 is 66737761182.

28116773766 is nontrivially palindromic in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19500 + ... + 237936.

It is an arithmetic number, because the mean of its divisors is an integer number (2538686436).

Almost surely, 2^28116773766 is an apocalyptic number.

28116773766 is an abundant number, since it is smaller than the sum of its proper divisors (32811700698).

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

28116773766 is a wasteful number, since it uses less digits than its factorization.

28116773766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225596 (or 225593 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The spelling of 28116773766 in words is "twenty-eight billion, one hundred sixteen million, seven hundred seventy-three thousand, seven hundred sixty-six".