28186068445 has 16 divisors (see below), whose sum is σ = 33960938112. Its totient is φ = 22457171520.

The previous prime is 28186068439. The next prime is 28186068467. The reversal of 28186068445 is 54486068182.

It is a happy number.

It is not a de Polignac number, because 28186068445 - 2¹⁵ = 28186035677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28186068392 and 28186068401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3424435 + ... + 3432655.

It is an arithmetic number, because the mean of its divisors is an integer number (2122558632).

Almost surely, 2^28186068445 is an apocalyptic number.

It is an amenable number.

28186068445 is a deficient number, since it is larger than the sum of its proper divisors (5774869667).

28186068445 is a wasteful number, since it uses less digits than its factorization.

28186068445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10932.

The product of its (nonzero) digits is 2949120, while the sum is 52.

The spelling of 28186068445 in words is "twenty-eight billion, one hundred eighty-six million, sixty-eight thousand, four hundred forty-five".