28788332561255 has 16 divisors (see below), whose sum is σ = 34854693076800. Its totient is φ = 22825770688512.

The previous prime is 28788332561251. The next prime is 28788332561257. The reversal of 28788332561255 is 55216523388782.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28788332561255 - 2² = 28788332561251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28788332561191 and 28788332561200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28788332561251) 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 15 ways as a sum of consecutive naturals, for example, 56034164 + ... + 56545593.

It is an arithmetic number, because the mean of its divisors is an integer number (2178418317300).

Almost surely, 2^{28788332561255} is an apocalyptic number.

28788332561255 is a deficient number, since it is larger than the sum of its proper divisors (6066360515545).

28788332561255 is a wasteful number, since it uses less digits than its factorization.

28788332561255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112580218.

The product of its digits is 193536000, while the sum is 65.

The spelling of 28788332561255 in words is "twenty-eight trillion, seven hundred eighty-eight billion, three hundred thirty-two million, five hundred sixty-one thousand, two hundred fifty-five".