28005555275005 has 16 divisors (see below), whose sum is σ = 41899220360064. Its totient is φ = 17458008482880.

The previous prime is 28005555274993. The next prime is 28005555275041. The reversal of 28005555275005 is 50057255550082.

It is not a de Polignac number, because 28005555275005 - 2⁵ = 28005555274973 is a prime.

It is a super-2 number, since 2×28005555275005² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28005555275005.

It is a congruent number.

It is an unprimeable number.

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, 36370850622 + ... + 36370851391.

It is an arithmetic number, because the mean of its divisors is an integer number (2618701272504).

Almost surely, 2^{28005555275005} is an apocalyptic number.

It is an amenable number.

28005555275005 is a deficient number, since it is larger than the sum of its proper divisors (13893665085059).

28005555275005 is a wasteful number, since it uses less digits than its factorization.

28005555275005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72741702036.

The product of its (nonzero) digits is 3500000, while the sum is 49.

The spelling of 28005555275005 in words is "twenty-eight trillion, five billion, five hundred fifty-five million, two hundred seventy-five thousand, five".