28866688880443 has 8 divisors (see below), whose sum is σ = 30645375133680. Its totient is φ = 27096963264000.

The previous prime is 28866688880399. The next prime is 28866688880453. The reversal of 28866688880443 is 34408888666882.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28866688880443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28866688880453) 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, 2240152558 + ... + 2240165443.

It is an arithmetic number, because the mean of its divisors is an integer number (3830671891710).

Almost surely, 2^{28866688880443} is an apocalyptic number.

28866688880443 is a deficient number, since it is larger than the sum of its proper divisors (1778686253237).

28866688880443 is a wasteful number, since it uses less digits than its factorization.

28866688880443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4480318397.

The product of its (nonzero) digits is 5435817984, while the sum is 79.

The spelling of 28866688880443 in words is "twenty-eight trillion, eight hundred sixty-six billion, six hundred eighty-eight million, eight hundred eighty thousand, four hundred forty-three".