28065690556783 has 8 divisors (see below), whose sum is σ = 30840599578320. Its totient is φ = 25328028636480.

The previous prime is 28065690556751. The next prime is 28065690556817. The reversal of 28065690556783 is 38765509656082.

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 28065690556783 - 2⁵ = 28065690556751 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 (28065690551783) 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, 9311773728 + ... + 9311776741.

It is an arithmetic number, because the mean of its divisors is an integer number (3855074947290).

Almost surely, 2^{28065690556783} is an apocalyptic number.

28065690556783 is a deficient number, since it is larger than the sum of its proper divisors (2774909021537).

28065690556783 is a wasteful number, since it uses less digits than its factorization.

28065690556783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18623550617.

The product of its (nonzero) digits is 653184000, while the sum is 70.

The spelling of 28065690556783 in words is "twenty-eight trillion, sixty-five billion, six hundred ninety million, five hundred fifty-six thousand, seven hundred eighty-three".