28068071911 has 8 divisors (see below), whose sum is σ = 30654639504. Its totient is φ = 25487325120.

The previous prime is 28068071881. The next prime is 28068071951. The reversal of 28068071911 is 11917086082.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28068071911 - 2¹⁹ = 28067547623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28068071951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1445110 + ... + 1464403.

It is an arithmetic number, because the mean of its divisors is an integer number (3831829938).

Almost surely, 2^28068071911 is an apocalyptic number.

28068071911 is a deficient number, since it is larger than the sum of its proper divisors (2586567593).

28068071911 is a wasteful number, since it uses less digits than its factorization.

28068071911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2910401.

The product of its (nonzero) digits is 48384, while the sum is 43.

The spelling of 28068071911 in words is "twenty-eight billion, sixty-eight million, seventy-one thousand, nine hundred eleven".