28027777505255 has 16 divisors (see below), whose sum is σ = 36691023692448. Its totient is φ = 20383774320000.

The previous prime is 28027777505251. The next prime is 28027777505267. The reversal of 28027777505255 is 55250577772082.

It is not a de Polignac number, because 28027777505255 - 2² = 28027777505251 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 (28027777505251) 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, 23673905 + ... + 24829605.

It is an arithmetic number, because the mean of its divisors is an integer number (2293188980778).

Almost surely, 2^{28027777505255} is an apocalyptic number.

28027777505255 is a deficient number, since it is larger than the sum of its proper divisors (8663246187193).

28027777505255 is a wasteful number, since it uses less digits than its factorization.

28027777505255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596658.

The product of its (nonzero) digits is 96040000, while the sum is 62.

The spelling of 28027777505255 in words is "twenty-eight trillion, twenty-seven billion, seven hundred seventy-seven million, five hundred five thousand, two hundred fifty-five".