28065357751 has 4 divisors (see below), whose sum is σ = 28970691904. Its totient is φ = 27160023600.

The previous prime is 28065357743. The next prime is 28065357769. The reversal of 28065357751 is 15775356082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28065357751 - 2³ = 28065357743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28065357695 and 28065357704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28065357721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452667030 + ... + 452667091.

It is an arithmetic number, because the mean of its divisors is an integer number (7242672976).

Almost surely, 2^28065357751 is an apocalyptic number.

28065357751 is a deficient number, since it is larger than the sum of its proper divisors (905334153).

28065357751 is an equidigital number, since it uses as much as digits as its factorization.

28065357751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905334152.

The product of its (nonzero) digits is 1764000, while the sum is 49.

The spelling of 28065357751 in words is "twenty-eight billion, sixty-five million, three hundred fifty-seven thousand, seven hundred fifty-one".