28787727965759 has 16 divisors (see below), whose sum is σ = 33330940957440. Its totient is φ = 24352797433920.

The previous prime is 28787727965699. The next prime is 28787727965761. The reversal of 28787727965759 is 95756972778782.

It is a cyclic number.

It is not a de Polignac number, because 28787727965759 - 2⁴⁰ = 27688216337983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28787727967759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24950054 + ... + 26078355.

It is an arithmetic number, because the mean of its divisors is an integer number (2083183809840).

Almost surely, 2^{28787727965759} is an apocalyptic number.

28787727965759 is a deficient number, since it is larger than the sum of its proper divisors (4543212991681).

28787727965759 is an equidigital number, since it uses as much as digits as its factorization.

28787727965759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51029470.

The product of its digits is 52276492800, while the sum is 89.

The spelling of 28787727965759 in words is "twenty-eight trillion, seven hundred eighty-seven billion, seven hundred twenty-seven million, nine hundred sixty-five thousand, seven hundred fifty-nine".