28063820775 has 24 divisors (see below), whose sum is σ = 46632035200. Its totient is φ = 14892150240.

The previous prime is 28063820713. The next prime is 28063820803. The reversal of 28063820775 is 57702836082.

It is not a de Polignac number, because 28063820775 - 2¹³ = 28063812583 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 925237 + ... + 955086.

Almost surely, 2^28063820775 is an apocalyptic number.

28063820775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28063820775 is a deficient number, since it is larger than the sum of its proper divisors (18568214425).

28063820775 is a wasteful number, since it uses less digits than its factorization.

28063820775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1880535 (or 1880530 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 28063820775 in words is "twenty-eight billion, sixty-three million, eight hundred twenty thousand, seven hundred seventy-five".