28076853643 has 4 divisors (see below), whose sum is σ = 29045021040. Its totient is φ = 27108686248.

The previous prime is 28076853631. The next prime is 28076853661. The reversal of 28076853643 is 34635867082.

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 28076853643 - 2⁹ = 28076853131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28076853443) 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, 484083655 + ... + 484083712.

It is an arithmetic number, because the mean of its divisors is an integer number (7261255260).

Almost surely, 2^28076853643 is an apocalyptic number.

28076853643 is a deficient number, since it is larger than the sum of its proper divisors (968167397).

28076853643 is an equidigital number, since it uses as much as digits as its factorization.

28076853643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968167396.

The product of its (nonzero) digits is 5806080, while the sum is 52.

The spelling of 28076853643 in words is "twenty-eight billion, seventy-six million, eight hundred fifty-three thousand, six hundred forty-three".