28940055055065 has 96 divisors (see below), whose sum is σ = 63159801000192. Its totient is φ = 11907956160000.

The previous prime is 28940055054929. The next prime is 28940055055081. The reversal of 28940055055065 is 56055055004982.

It is a happy number.

28940055055065 is a `hidden beast` number, since 2 + 89 + 4 + 0 + 0 + 5 + 5 + 0 + 550 + 6 + 5 = 666.

It is not a de Polignac number, because 28940055055065 - 2¹⁰ = 28940055054041 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 40997106 + ... + 41697035.

It is an arithmetic number, because the mean of its divisors is an integer number (657914593752).

Almost surely, 2^{28940055055065} is an apocalyptic number.

It is an amenable number.

28940055055065 is an abundant number, since it is smaller than the sum of its proper divisors (34219745945127).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28940055055065 is a wasteful number, since it uses less digits than its factorization.

28940055055065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82694271 (or 82694268 counting only the distinct ones).

The product of its (nonzero) digits is 10800000, while the sum is 54.

The spelling of 28940055055065 in words is "twenty-eight trillion, nine hundred forty billion, fifty-five million, fifty-five thousand, sixty-five".