28976605543 has 4 divisors (see below), whose sum is σ = 29004495520. Its totient is φ = 28948715568.

The previous prime is 28976605531. The next prime is 28976605549. The reversal of 28976605543 is 34550667982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34550667982 = 2 ⋅17275333991.

It is a cyclic number.

It is not a de Polignac number, because 28976605543 - 2³³ = 20386670951 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 (28976605549) 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, 13943430 + ... + 13945507.

It is an arithmetic number, because the mean of its divisors is an integer number (7251123880).

Almost surely, 2^28976605543 is an apocalyptic number.

28976605543 is a deficient number, since it is larger than the sum of its proper divisors (27889977).

28976605543 is a wasteful number, since it uses less digits than its factorization.

28976605543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27889976.

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 28976605543 in words is "twenty-eight billion, nine hundred seventy-six million, six hundred five thousand, five hundred forty-three".