28005555055255 has 8 divisors (see below), whose sum is σ = 33693058526400. Its totient is φ = 22346849070816.

The previous prime is 28005555055243. The next prime is 28005555055267. The reversal of 28005555055255 is 55255055550082.

It is an interprime number because it is at equal distance from previous prime (28005555055243) and next prime (28005555055267).

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

It is a cyclic number.

It is not a de Polignac number, because 28005555055255 - 2¹¹ = 28005555053207 is a prime.

It is a super-2 number, since 2×28005555055255² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7199369535 + ... + 7199373424.

It is an arithmetic number, because the mean of its divisors is an integer number (4211632315800).

Almost surely, 2^{28005555055255} is an apocalyptic number.

28005555055255 is a deficient number, since it is larger than the sum of its proper divisors (5687503471145).

28005555055255 is a wasteful number, since it uses less digits than its factorization.

28005555055255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14398743353.

The product of its (nonzero) digits is 12500000, while the sum is 52.

The spelling of 28005555055255 in words is "twenty-eight trillion, five billion, five hundred fifty-five million, fifty-five thousand, two hundred fifty-five".