28081486161 has 16 divisors (see below), whose sum is σ = 43036761600. Its totient is φ = 18075438864.

The previous prime is 28081486141. The next prime is 28081486211. The reversal of 28081486161 is 16168418082.

28081486161 is a `hidden beast` number, since 2 + 8 + 0 + 8 + 1 + 486 + 161 = 666.

It is not a de Polignac number, because 28081486161 - 2⁷ = 28081486033 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28081486141) 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 15 ways as a sum of consecutive naturals, for example, 17931201 + ... + 17932766.

It is an arithmetic number, because the mean of its divisors is an integer number (2689797600).

Almost surely, 2^28081486161 is an apocalyptic number.

It is an amenable number.

28081486161 is a deficient number, since it is larger than the sum of its proper divisors (14955275439).

28081486161 is a wasteful number, since it uses less digits than its factorization.

28081486161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35864005 (or 35863999 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The spelling of 28081486161 in words is "twenty-eight billion, eighty-one million, four hundred eighty-six thousand, one hundred sixty-one".