28455680853 has 6 divisors (see below), whose sum is σ = 41102650134. Its totient is φ = 18970453896.

The previous prime is 28455680837. The next prime is 28455680881. The reversal of 28455680853 is 35808655482.

28455680853 is a `hidden beast` number, since 2 + 8 + 4 + 556 + 8 + 0 + 85 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18594595044 + 9861085809 = 136362^2 + 99303^2 .

It is not a de Polignac number, because 28455680853 - 2⁴ = 28455680837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28455680853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28455688853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1580871150 + ... + 1580871167.

It is an arithmetic number, because the mean of its divisors is an integer number (6850441689).

Almost surely, 2^28455680853 is an apocalyptic number.

It is an amenable number.

28455680853 is a deficient number, since it is larger than the sum of its proper divisors (12646969281).

28455680853 is a wasteful number, since it uses less digits than its factorization.

28455680853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161742323 (or 3161742320 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 54.

The spelling of 28455680853 in words is "twenty-eight billion, four hundred fifty-five million, six hundred eighty thousand, eight hundred fifty-three".