28753665635 has 16 divisors (see below), whose sum is σ = 35180974080. Its totient is φ = 22553921760.

The previous prime is 28753665623. The next prime is 28753665643. The reversal of 28753665635 is 53656635782.

It is not a de Polignac number, because 28753665635 - 2¹⁴ = 28753649251 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14261 + ... + 240230.

It is an arithmetic number, because the mean of its divisors is an integer number (2198810880).

Almost surely, 2^28753665635 is an apocalyptic number.

28753665635 is a deficient number, since it is larger than the sum of its proper divisors (6427308445).

28753665635 is a wasteful number, since it uses less digits than its factorization.

28753665635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254938.

The product of its digits is 27216000, while the sum is 56.

The spelling of 28753665635 in words is "twenty-eight billion, seven hundred fifty-three million, six hundred sixty-five thousand, six hundred thirty-five".