28666355255 has 8 divisors (see below), whose sum is σ = 34400572224. Its totient is φ = 22932453600.

The previous prime is 28666355239. The next prime is 28666355257. The reversal of 28666355255 is 55255366682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28666355255 - 2⁴ = 28666355239 is a prime.

It is a super-2 number, since 2×28666355255² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28666355197 and 28666355206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28666355257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234185 + ... + 334925.

It is an arithmetic number, because the mean of its divisors is an integer number (4300071528).

Almost surely, 2^28666355255 is an apocalyptic number.

28666355255 is a deficient number, since it is larger than the sum of its proper divisors (5734216969).

28666355255 is a wasteful number, since it uses less digits than its factorization.

28666355255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157657.

The product of its digits is 12960000, while the sum is 53.

The spelling of 28666355255 in words is "twenty-eight billion, six hundred sixty-six million, three hundred fifty-five thousand, two hundred fifty-five".