28223066641 has 32 divisors (see below), whose sum is σ = 36033896448. Its totient is φ = 21463626240.

The previous prime is 28223066629. The next prime is 28223066657. The reversal of 28223066641 is 14666032282.

It is not a de Polignac number, because 28223066641 - 2¹⁹ = 28222542353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28223066594 and 28223066603.

It is not an unprimeable number, because it can be changed into a prime (28223066141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5616256 + ... + 5621278.

It is an arithmetic number, because the mean of its divisors is an integer number (1126059264).

Almost surely, 2^28223066641 is an apocalyptic number.

It is an amenable number.

28223066641 is a deficient number, since it is larger than the sum of its proper divisors (7810829807).

28223066641 is a wasteful number, since it uses less digits than its factorization.

28223066641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 28223066641 in words is "twenty-eight billion, two hundred twenty-three million, sixty-six thousand, six hundred forty-one".