28038777853 has 4 divisors (see below), whose sum is σ = 28039135168. Its totient is φ = 28038420540.

The previous prime is 28038777829. The next prime is 28038777863. The reversal of 28038777853 is 35877783082.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28038777853 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 (28038777863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4101 + ... + 236842.

It is an arithmetic number, because the mean of its divisors is an integer number (7009783792).

Almost surely, 2^28038777853 is an apocalyptic number.

It is an amenable number.

28038777853 is a deficient number, since it is larger than the sum of its proper divisors (357315).

28038777853 is a wasteful number, since it uses less digits than its factorization.

28038777853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357314.

The product of its (nonzero) digits is 15805440, while the sum is 58.

The spelling of 28038777853 in words is "twenty-eight billion, thirty-eight million, seven hundred seventy-seven thousand, eight hundred fifty-three".